Final answer:
Sources of intelligence information are collected through methods like physical surveillance, electronic surveillance, confidential informants, and public records.
Step-by-step explanation:
Sources of intelligence information are generally collected from various methods, including physical surveillance (such as in-person or videotape), electronic surveillance (like trap and trace or wiretap), confidential informants and undercover operators, newspaper reports, internet sources, and public records (like deeds and property tax records).
Physical surveillance involves monitoring and observing individuals or locations, either in person or through video recordings. Electronic surveillance utilizes technology to intercept and monitor communications, such as phone calls or internet activities. Confidential informants and undercover operators gather information by infiltrating targeted groups or organizations. Newspaper reports, internet sources, and public records provide readily available information that could be useful.