Which feature must be enabled to ensure the quick action will be displayed as expected?

The administrator at DreamHouse Realty added an email quick action to the Case page layout and is unable to see the action on the case feed.

Which feature must be enabled to ensure the quick action will be displayed as expected?
A . Email Notifications
B . Email-to-Case
C . Email Alerts
D . Email Templates

Answer: B

Explanation:

Email-to-Case allows you to create cases from incoming emails. You need to enable this feature and set up routing addresses and case creation settings.

Reference: https://help.salesforce.com/s/articleView?id=sf.customizesupport_email_to_case.htm&type=5