Discuss a possible advantage of offering rewards or incentives to increase response rates. are there any disadvantages? discuss a possible advantage. a. a possible advantage of offering rewards or incentives to increase response rates is that the sample has a higher proportion of people that are interested in the reward or incentive than the population. b. a possible advantage of offering rewards or incentives to increase response rates is that the monetary outlays the researchers need to make for the survey are lower. c. a possible advantage of offering rewards or incentives to increase response rates is that respondents put more effort into completely and accurately answering the survey questions because they feel obligated. d. a possible advantage of offering rewards or incentives to increase response rates is that if the sponsor of the survey has a vested interest in the results, then the rewards or incentives add credibility to the survey.