The personnel director at a large company studied the eating habits of the company's employees.The director watched and recorded whether each employee brought his/her own lunch to work,
Ate at the company cafeteria,or went out to lunch.What method of data collection was used here?

A) Direct observation.
B) An experiment.
C) A survey.
D) A personal interview.

The personnel director observed and recorded the employees' behavior directly, without asking for their input or conducting any intervention, which is consistent with the definition of direct observation as a method of data collection. B) An experiment, C) A survey, and D) A personal interview would involve a different approach to data collection that does not match the situation described in the scenario.