Explanation
To see why the email was not sent to the prospect, the marketing manager should refer to the list email send report to see if a suppression list was used. A suppression list is a list of prospects who should not receive a specific email, even if they are on the recipient list. If the prospect was on a suppression list, they would not receive the email. The other options are not likely to explain why the email was not sent, as the prospect was already on the recipient list and was mailable

Explanation
An automation rule is a rule that automatically applies an action to a prospect based on whether they match set criteria. An automation rule consists of two parts: the criteria and the action. The criteria are the conditions that the prospect must meet to trigger the rule, such as having a certain score, grade, or field value. The action is the outcome that the rule will apply to the prospect, such as changing their field value, adding them to a list, or sending them an email. An automation rule can run once or multiple times per prospect, depending on the settings

Explanation
A prospect's first touch campaign is the campaign that is associated with the prospect when they are created in Marketing Cloud Account Engagement. This campaign can be set using completion actions, which are actions that Marketing Cloud Account Engagement executes after a prospect successfully completes a desired activity, such as submitting a form or clicking a custom link1. Completion actions can be configured to change the prospect's campaign to the one that is associated with the form or custom link

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

Explanation
To troubleshoot why a prospect did not receive an email from a drip program, an Administrator should check the following tabs in Marketing Cloud Account Engagement:
* The Audits tab to see if the prospect was on the correct lists when the email was sent. This tab shows the list membership changes and email sends for the prospect.
* The Overview tab to determine whether the prospect is unmailable. This tab shows the prospect's email status, which could be opt-out, hard bounce, or do not email.
* The Lists tab to determine whether the prospect is on the recipient list or any suppression lists. This tab shows the lists that the prospect belongs to, including any lists that are used to exclude prospects from receiving emails. References: Marketing Cloud Account Engagement Audits Tab, Marketing Cloud Account Engagement Email Statuses, Marketing Cloud Account Engagement Lists