Answer:
The main purpose of a questionnaire is to extract data from the respondents. It's a relatively inexpensive, quick, and efficient way of collecting large amount data even when the researcher isn't present to collect those responses first hand.
Explanation:
Or pwede din pong
Questionnaires allow collection of both subjective and objective data in a large sample of the study population in order to obtain results that are statistically significant, specially when resources are limited. It is a good tool for the protection of the privacy of the participants.
