The most common instrument used to collect primary data is the
A) human eye.
B) bar code reader.
C) Internet.
D) video camera.
E) questionnaire.

Question

Quizplus · Accepted Answer

A questionnaire is the most common instrument used to collect primary data. It allows researchers to gather information directly from participants in a consistent and standardized way. Other options listed, such as the human eye, bar code reader, Internet, and video camera, are not typically used as primary data collection instruments, or they are used in conjunction with other methods.

The Most Common Instrument Used to Collect Primary Data Is