Salesforce's Einstein Key Accounts Identification feature is designed to help sales managers and teams identify and focus on their most important accounts based on a variety of metrics, including historical data and engagement levels.
Einstein Key Accounts Identification: This feature uses advanced machine learning algorithms to analyze past opportunity creation data and various engagement metrics to pinpoint which accounts are likely to be the most valuable or have the highest potential. This can help sales managers prioritize their efforts and resources more effectively. The insights generated by this tool are integrated directly into the Salesforce account records, providing easily accessible and actionable data for sales teams.
This contrasts with options like the Einstein Behavior Score, Pardot grade, and Pardot score, which, while useful for assessing individual lead or contact engagement and readiness, do not provide the holistic account-level insight that Einstein Key Accounts Identification does.

Explanation
The way that a visitor can convert to a prospect is by submitting a Marketing Cloud Account Engagement form. A visitor is an anonymous person who visits a website that has Marketing Cloud Account Engagement tracking code installed. A visitor can be identified by their IP address, location, browser, device, and pages viewed. A visitor can also be tracked by Marketing Cloud Account Engagement cookies if they have visited the website before. A visitor can convert to a prospect when they provide their email address to Marketing Cloud Account Engagement through a form, a form handler, a landing page, or a custom redirect. A prospect is a known person who has a record in Marketing Cloud Account Engagement and can be associated with a lead or a contact in Salesforce. A prospect can be tracked by their email address, activities, score, grade, and other fields. A prospect can also be segmented, nurtured, and qualified by Marketing Cloud Account Engagement5. Option A is not correct because downloading an eBook does not necessarily convert

Explanation
The daily system generated emails are: daily prospect activity emails (for all prospects), daily prospect activity emails (for my prospects), daily visitor activity emails, and daily prospect assignment emails. These are the emails that Marketing Cloud Account Engagement sends to users based on their preferences, which provide a summary of the activities and actions of prospects and visitors on a daily basis. Daily prospect activity emails (for all prospects) show the activities of all prospects in your Marketing Cloud Account Engagement account.
Daily prospect activity emails (for my prospects) show the activities of the prospects that are assigned to you.
Daily visitor activity emails show the activities of the anonymous visitors on your website. Daily prospect assignment emails show the prospects that have been assigned to you or to other users910 References: 9: Auto generated email - How to guide10: Customizing the System Generated Emails

Explanation
According to the Salesforce documentation, the option that adheres most closely to email sending best practices is: B) Establish a consistent, predictable cadence for your email communications. Email sending best practices are guidelines that help users to create and send effective and engaging emails to their prospects and customers. Email sending best practices can cover different aspects of email marketing, such as content, design, deliverability, and performance. One of the email sending best practices is to establish a consistent, predictable cadence for your email communications, meaning that you should send your emails at regular intervals and frequencies, and that you should align your email sends with your audience's expectations and preferences. By establishing a consistent, predictable cadence for your email communications, you can build trust and loyalty with your subscribers, increase your open and click rates, and avoid spam complaints or unsubscribes. When possible, sending emails on Monday mornings in order to stay top of mind throughout the week, sending plain text only emails in order to increase engagement rates, or making sure that all emails have a high image-to-text ratio are not the options that adhere most closely to email sending best practices, as they are either ineffective, outdated, or detrimental options for email marketing. References: Salesforce documentation

Explanation
According to the Salesforce documentation, the answer is true. New feature alerts can be found at the top of the dashboard. A new feature alert is a notification that informs the user about the latest features and updates that are available in Marketing Cloud Account Engagement. A new feature alert can be found at the top of the dashboard in Marketing Cloud Account Engagement, and it can show different information, such as the name, description, or link of the new feature or update. The user can click on the new feature alert to learn more about it, or to access it. The user can also dismiss the new feature alert by clicking on the X icon, or view the previous new feature alerts by clicking on the bell icon. The new feature alerts can help the user to stay informed and updated about the new features and updates that are available in Marketing Cloud Account Engagement, and to take advantage of them. References: Salesforce documentation