A multinational company using the Salesforce platform wants to implement robust user activity verification capabilities...

For real-time visibility into login events and other security-relevant user activity, Salesforce Event Monitoring is the purpose-built monitoring feature. Event Monitoring and Event Log Files give security and identity teams access to detailed telemetry about login behavior, session activity, API usage, and other actions that matter for threat detection and investigation. Profiles and encryption settings do not provide operational monitoring, and Data Loader is unrelated. The architectural distinction is between preventive controls and detective controls. Event Monitoring is a detective control: it helps the organization observe behavior, identify anomalies, and react quickly. When the requirement mentions unusual login patterns, security incidents, or real-time monitoring, Salesforce documentation points architects toward Event Monitoring rather than ordinary administrative setup screens. This is why option A is the best answer in Salesforce terms.