Based on the application sensor configuration and the filter details:
D . Apple FaceTime will be blocked, based on the Excessive-Bandwidth filter configuration: The "Excessive-Bandwidth" filter is set to block, which includes "FaceTime" under its application signature. As a result, FaceTime will be blocked regardless of the "Apple" filter configuration because the "Excessive-Bandwidth" filter takes precedence due to its block action setting.
The other options are not correct:
A . Apple FaceTime will be allowed, based on the Video/Audio category configuration: The Video/Audio category is not relevant because FaceTime is specifically included in the Excessive-Bandwidth filter, which blocks it.
B . Apple FaceTime will be allowed, based on the Apple filter configuration: Although the Apple filter is set to monitor, the block action of the Excessive-Bandwidth filter will override this.
C . Apple FaceTime will be allowed only if the Apple filter in Application and Filter Overrides is set to Allow: The allow setting for the Apple filter is irrelevant in this context, as the block action in the Excessive-Bandwidth filter will prevail.
Reference
FortiOS 7.4.1 Administration Guide - Application Control and Filtering, page 978.
FortiOS 7.4.1 Administration Guide - Application Sensor Configuration, page 982.