Explanation
To provide a summary of org's security health, an administrator should run a Health Check that compares org's settings against baseline settings defined by Salesforce Security Baseline Standard or industry standards such as CIS (Center for Internet Security) Benchmark Standard. Health Check generates an overall health score based on how org's settings match with baseline settings for various security categories such as Password Policies, Network Access, Session Settings etc. Health Check also provides recommendations for improving org's security health score by adjusting settings that do not match with baseline settings. Changing Org-Wide Default to private, turning on Event Monitoring, or downloading user login data will not provide a summary of org's security health.
References:https://help.salesforce.com/s/articleView?id=sf.security_health_check.htm&type=5

Explanation
A user with manager role above the agent can change ownership on multiple cases thatare owned by the agent or by users below the agent in the role hierarchy. A user with the System Administrator profile can change ownership on any case, regardless of the owner or role hierarchy. References:
https://help.salesforce.com/s/articleView?id=sf.case_change_owner.htm&type=5https://help.salesforce.com/s/art

Explanation
Account and contact are two records that can be created when using the lead conversion process. The lead conversion process converts a lead into an account, a contact, and optionally, an opportunity. References:
https://help.salesforce.com/s/articleView?id=sf.convert_lead.htm&type=5

Explanation
A criteria-based sharing rule is a tool that allows administrators to share records with certain users based on field values rather than ownership. For example, a criteria-based sharing rule can share all opportunities with a cross-sell opportunity type with a specific group of users. A public group is a collection of individual users, roles, roles and subordinates, or other groups that can be used to simplify sharing settings and other processes.
In this case, the administrator can add the subject matter experts to a public group and give them access to records with a criteria-based sharingrule that matches the cross-sell opportunity type. References:
https://help.salesforce.com/s/articleView?id=sf.sharing_criteria_rules.htm&type=5https://help.salesforce.com/s/a

Explanation
Email-to-Case allows administrators to set up routing addresses that automatically create cases from incoming emails and assign them to queues based on predefined criteria. This way, emails from customers can generate cases automatically and be sent to the correct queue. A flow is a tool for building automated processes, but it is not designed for email routing. A custom email service is a way to process inbound emails using Apex code, but it requires coding skills and is more complex than Email-to-Case. An escalation rule is a way to escalate cases based on certain conditions, but it does not create cases from emails or assign them to queues.
References: https://help.salesforce.com/s/articleView?id=sf.customize_email2case.htm&type=5