Question

16. In a good questionnaire
a) number of questions should be as possible
b) Questions relating to maths should be asked
c) Personal Question should be preffered
d) Questions using double negatives should be avoided​

Answer 1

Answer:

a) number of questions should be as possible

d) Questions using double negatives should be avoided

Answer 2

Answer:

d) is correct as we should not write wrong about anything or anyone