ZPA Access Policies evaluate conditions such as identity, group, posture, location, risk, and client context, then apply an allow or block outcome. Those outcomes can target individual Application Segments or Application Segment Groups. Segment Groups are administrative containers, but policy can still bind access decisions to them. Option C (When a condition is met. an Access Policy can either allow or block access to Application Segments and Application Segment Groups) is correct because Access Policies can allow or block both segments and segment groups when rule conditions match.

Why the other options are incorrect:

A. When a condition is met, an Access Policy can either allow or block access to Application Segments OR Application Segment Groups: An Application Segment Group is an administrative grouping of app segments used to simplify access policy targeting.

B. When a condition is met, an Access Policy can allow access to Application Segments Groups and block access to Application Segment: An Application Segment defines private app reachability by FQDN/IP, ports, and related settings.

D. When a condition is met, an Access Policy can allow access to Application Segments and block access to Application Segment Groups: An Application Segment Group is an administrative grouping of app segments used to simplify access policy targeting.