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

The answer is "An experiment."

An experiment refers to a controlled study in which the scientist endeavors to comprehend circumstances and end results connections. The examination is "controlled" as in the analyst controls (1) how subjects are relegated to gatherings and (2) which medicines each gathering gets.  

In the analysis stage, the specialist thinks about gathering scores on some reliant variable. In view of the investigation, the scientist makes an inference about whether the treatment (independent  variable) causally affected the dependent variable.

answer: d. characteristics of guests

explanation: it is directly related to the spending characteristics of attendees who fall into each of these categories:

answerconversion factor;