One of the more popular ways of conducting a survey,where people are mailed a questionnaire and then return it to the researcher,is known as a:

A) self-administered questionnaire
B) face-to-face interview
C) telephone interview
D) close-ended questionnaire
E) response rate

Self-administered questionnaires are the most common type of survey that is mailed out to participants. The questionnaire is mailed to the participants who can complete it on their own and then return it to the researcher in a self-addressed stamped envelope. This method is cost-effective and provides anonymity to the respondents, which may help to increase the response rate.