Question

One drawback of mailed marketing surveys is

Answer 1

Drawback of mailed marketing survey.
Sometimes the client has no reply or may reply but will take to much time like 2 weeks or more. Mail sometimes are not 100% sure to be received by the the recipient sometimes it is stored directly to spam.

Answer 2

One drawback of mailed marketing surveys is  

  A. the process is inconvenient for the respondent.

  B. the lack of anonymity.

  C. the high cost.

  D. longer response times, sometimes six to eight weeks

The answer is, D. longer response times, sometimes six to eight weeks