Explanation
According to the Salesforce documentation, the action of adding a prospect to a list when they click on a link in a list email can be added on the Sending tab of the list email. The Sending tab allows users to configure the sender, subject, and preheader of the list email, as well as the tracking options and completion actions. A completion action is an automation tool that can be used to perform an action after a prospect successfully completes a marketing element, such as clicking a link in an email. A completion action can be used to add the prospect to a specific list, among other actions. The action cannot be added on the Sending tab of the email template, as the email template is a reusable design that does not have completion actions. The action cannot be added on the Testing tab of the email template or the list email, as the Testing tab is used to preview, validate, and test the email before sending, not to add completion actions. References: Salesforce documentation

Explanation
The reason why the email link www.lenoxsoft.com was not re-written for tracking is that the link should start with http or https to be automatically re-written. Marketing Cloud Account Engagement automatically re-writes links in emails to track the clicks and measure the engagement of the recipients. However, Marketing Cloud Account Engagement only re-writes links that start with http or https, as these are the protocols that indicate a web address. The link www.lenoxsoft.com does not have a protocol, so Marketing Cloud Account Engagement does not recognize it as a web address and does not re-write it for tracking. The other options are not relevant for link re-writing. The link does not need to contain a wildcard, point to go.Marketing Cloud Account Engagement.com, or be populated with variable tags to be automatically re-written. These are features that can be used to create dynamic or custom links, but they are not required for link re-writing. References [Link Click Tracking]

Explanation
You can preview or test matches for automation rules before you run them by using the automation preview option. This option allows you to see how many prospects will be matched by your automation rules without actually running them. You can access this option by clicking the Preview button while the rules are in Paused mode. You will receive an email notification when the preview is finished or you can wait on the page for it to finish in real-time. The preview will tell you how many prospects will be matched and show you a sample of them. If you adjust criteria on existing automation rules, please note that automation previews will identify only prospects who have not already had the rule's actions applied to them.
Answer A is incorrect because running the automation rule will not only show you how many matches there are, but also apply the actions to them, which may not be what you want. Answer C is incorrect because creating a list and seeing how many prospects are affected will not give you the same results as the automation preview option, since the list criteria may not match the automation rule criteria exactly. Answer D is incorrect because there is no such option as the prospect table actions. References: Automation Rules, Preview Automation Rules

Explanation
The main cause of a sync from Salesforce to Account Engagement is making field changes to a Lead or Contact record (D). This will trigger a sync of the updated fields to the corresponding prospect record in Account Engagement. Updating a formula field in Salesforce (A) will not cause a sync, as formula fields are not supported by Account Engagement. Updating a field on a Contact record that does not have an email address (B) will not cause a sync, as email address is a required field for syncing. Opening a one to one email will not cause a sync, as it is not a field change event. References: What Causes a Prospect to Sync from Salesforce to Account Engagement?

Explanation
To post a form directly to a third-party platform as well as Marketing Cloud Account Engagement upon submission, LenoxSoft should use the form handler tool in Marketing Cloud Account Engagement. This tool allows them to use their own forms while still sending the data to Marketing Cloud Account Engagement.
They can specify the third-party platform's URL as the post URL in the form handler settings and map the form fields to Marketing Cloud Account Engagement fields. References: [Marketing Cloud Account Engagement Form Handler]