Qualitative researchers should NEVER participate as an actor in the events under study. (True or false?)

Qualitative researchers should NEVER participate as an actor in the events under study.
 
  Indicate whether the statement is true or false

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Which of the following statements is true about online surveys?
 
  A) A main disadvantage pertains to the likelihood of underrepresentation of the poor and the elderly.
 B)They are more costly and time consuming for the researcher than mailed surveys.
 C)They should never be mixed with postal surveys.
 D) Avoid setting a deadline for participation.

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Which of the following statements is recommended in email invitations to participate in an online survey?
 
  A) Place the URL link to the survey site at the bottom of the screen under your invitation to participate.
 B)Always send the email invitation early in the morning, regardless of the type of people you are surveying
 C)Offer to share selected results from the study with everyone who completes the survey.
 D) Avoid using a prize drawing as an incentive to participate.