Explanation
Netskope can inspect outbound SMTP traffic for Microsoft Exchange and Gmail using the Netskope client.
The Netskope client intercepts the SMTP traffic from the user's device and forwards it to the Netskope cloud for DLP scanning. The Netskope client does not inspect inbound SMTP traffic, as this is handled by the cloud email service or the MTA. Therefore, option A is correct and the other options are incorrect. References: Configure Netskope SMTP Proxy with Microsoft O365 Exchange, Configure Netskope SMTP Proxy with Gmail, SMTP DLP, Best Practices for Email Security with SMTP proxy

Explanation
The problem in this scenario is that the traffic matched a Do Not Decrypt policy. A Do Not Decrypt policy is a rule that specifies the traffic that you want to leave encrypted and not further analyzed by Netskope via the Real-time Protection policies1. In the exhibit, we can see that the traffic from the user to YouTube has a
"Bypass Traffic" value of "yes" and a "Netskope" value of "yes". This means that the traffic was steered to Netskope but not decrypted or inspected2. Therefore, the real-time policy that was created to restrict users from accessing YouTube content tagged as Sport did not apply, and users could still access the content. To solve this problem, you need to either remove or modify the Do Not Decrypt policy that matches the traffic to YouTube, or create an exception for the Sport category in the policy3. Therefore, option D is correct and the other options are incorrect. References: Page Events - Netskope Knowledge Portal, Add a Policy for SSL Decryption - Netskope Knowledge Portal, YouTube Content Control - Netskope Knowledge Portal