In terms of reaching the most number of people in requirements gathering,interviews are considered better than questionnaires.

Question

Quizplus · Accepted Answer

Questionnaires can reach a larger number of people more efficiently than interviews, as they can be distributed widely and completed by many individuals simultaneously, whereas interviews are conducted one-on-one or with small groups, limiting the number of participants that can be engaged in the same timeframe.

In Terms of Reaching the Most Number of People in Requirements