Which type of intelligence does MASINT focus on?

Measurement and Signature Intelligence (MASINT) is a specialized category of intelligence that focuses on the detection and analysis of physical phenomena to identify and gather intelligence from various types of signatures. These signatures can include a wide range of data, such as radar, infrared, acoustic, and nuclear signatures, among others. MASINT plays a crucial role in providing information about capabilities and activities that may not be detectable through traditional intelligence sources.

The emphasis on measurement and detection sets MASINT apart from other forms of intelligence, which might focus more directly on human or signal communications. By understanding the specific signatures of objects and activities, MASINT can provide vital insights into developments that would otherwise go unnoticed, enhancing situational awareness and informing decision-making processes in national security and defense contexts. This is why the option related to Measurement and Signature Intelligence is the correct answer.