The Major Reason to Disguise a Survey Is

Multiple Choice

The major reason to disguise a survey is:

A) to encourage response;if respondents don't think they are participating in a survey they are more likely to participate.
B) dependent upon the research objectives;the identity of the sponsor may bias the results.
C) that it takes time and respondents do not care.
D) to violate the "Do not call" rule.
E) to avoid providing incentives.