Which option is an example of a survey?
a. having customers fill out a questionnaire about their favorite
brand of toothpaste
o
b. finding the number of red jellybeans placed in an average jar of
jellybeans by counting
o
c. placing different groups of people in different colored rooms and
recording their mood
o
d. dividing a class into thirds, giving each third a different amount of
time to read, and then testing comprehension