Each type of question has its minimal number of answer choices and correct answers (e.g. the Multiple Choice question has to have at least 2 answer choices and only 1 correct answer). (ispringsolutions.com)
The lower response rates have increased costs, because survey companies must contact a larger number of people to get the same number of answers. (canadianbusiness.com)
The one who gets the maximum number of questions and gives the maximum number of answers will choose a charity this prize to be given to. (coinfox.info)