Answer to Question 1
Advantages include:
1 . reduce interviewer bias
2 . reduce cost and time associated with coding open-ended questions
3 . good for self-administered questionnaires
4 . researchers can limit responses to a particular set that matters
Disadvantages include:
1 . design of effective questions requires considerable time and cost upfront
2 . typically an exploratory study using open-ended questions is required beforehand
3 . tend to bias the data by the order in which alternative responses are listed
Answer to Question 2
B