A reCAPTCHA is displayed when you did not choose to display it because Marketing Cloud Account Engagement pings a database of known spammers and when a match is found automatically displays a reCAPTCHA. This is a security measure that helps prevent spam bots from submitting your forms and creating fake prospects. You can also choose to always display a reCAPTCHA on your forms or form handlers, or to never display a reCAPTCHA on your forms.

Explanation
If business hours are enabled for an engagement studio program, any email steps will be executed only during the specified hours. If a prospect enters an email step outside of the business hours, the email will be queued until the next business hour. Therefore, if a prospect enters a Send Email step at 4:30pm on Friday, and the business hours are Monday-Friday from 10am-4pm, the email will be sent on Monday at 10am

Creating or marking an opportunity as lost will result in the change of a prospect's score. This is because opportunities are one of the factors that affect the scoring of prospects in Marketing Cloud Account Engagement. Scoring is a numerical value that indicates the level of interest or engagement of a prospect in your products or services. Scoring is based on the actions and activities of prospects, such as opening emails, clicking links, filling out forms, visiting landing pages, and creating or updating opportunities. When an opportunity is created or marked as lost, the prospect's score will change accordingly. For example, if you have a scoring rule that adds 50 points to a prospect's score when an opportunity is created, and subtracts 25 points when an opportunity is lost, then creating or marking an opportunity as lost will affect the prospect's score by those amounts.
Answer B is incorrect because creating or marking an opportunity as lost will not result in no change of a prospect's score, as explained above. Reference: Scoring, Opportunities

Explanation
Marketing Cloud Account Engagement has a native integration with Google AdWords that allows you to track and measure the effectiveness of your paid search campaigns. You can link your AdWords account to Marketing Cloud Account Engagement and import cost data, conversions, and revenue information. You can also use Marketing Cloud Account Engagement to create landing pages and forms for your AdWords campaigns and track the prospects who click on your ads. Marketing Cloud Account Engagement does not have a native integration with Bing, Yahoo, or any other paid search ad platforms

Explanation
A reCAPTCHA is displayed when you did not choose to display it because Marketing Cloud Account Engagement pings a database of known spammers and when a match is found automatically displays a reCAPTCHA. This is a security measure that helps prevent spam bots from submitting your forms and creating fake prospects. You can also choose to always display a reCAPTCHA on your forms or form handlers, or to never display a reCAPTCHA on your forms.