Explanation:

- Interrogation: This involves questioning a suspect or witness by the police. It's a part of the investigation but not the entire process.

- Investigation: This is the correct answer. It encompasses all proceedings by a police officer to gather evidence, including crime scene analysis, witness interviews, and evidence collection.

- Charge Sheet: This is a formal document accusing someone of a crime, filed after an investigation is complete. It's not related to the evidence collection phase.

- All of the above: This option is incorrect as each term has a distinct meaning and only "Investigation" covers all evidence collection activities.