An internal security team identified a small number of high-risk users.

The correct answer is C. Falcon Foundry .

CrowdStrike describes Falcon Foundry as its application development platform for building custom apps on the Falcon platform. CrowdStrike’s materials state that Falcon Foundry allows customers to quickly create their own apps, and the Foundry documentation/blog content shows it supports application logic and storage needed for custom workflows and monitoring use cases. That is exactly what fits a requirement to build an app that monitors a defined set of high-risk users and triggers alerts on suspicious activity.

Why the other options are incorrect:

Falcon QueryBuilder is for constructing queries, not building an application. Falcon Spotlight is CrowdStrike’s vulnerability management capability, not an app-development framework. Charlotte AI is an AI assistant capability, not the platform feature used to develop custom monitoring apps. The only option that matches “develop this app” is Falcon Foundry .