Advanced Threat Protection defends users from malicious active content, phishing, exploit behavior, C2 callbacks, and risky web destinations. It works as part of ZIA's inline security stack, often alongside TLS inspection, Cloud Sandbox, DNS security, IPS, and URL categorization. Option A (Cloud App Control) is correct because malicious active content is the security object ATP is designed to detect and block.
Why the other options are incorrect:
B. URL Filtering: URL Filtering controls web destinations by category, URL, risk, and action such as allow, block, caution, or isolate.
C. Advanced Threat Protection: Advanced Threat Protection blocks malicious active content and related threats. The question is asking for the policy feature named by the configured category, which is not ATP here.
D. Mobile Malware Protection: Mobile Malware Protection focuses on mobile-device malware. The tested ZIA feature is broader web/cloud enforcement rather than mobile-only protection.