Question

Select the correct answer.
Which study is a survey?

A.
watching the construction of two buildings in your neighborhood and noting which one gets completed first

B.
making a group of people read with red or green lighting to see which one they read faster with

C.
taking a group of children to an ice-cream parlor and giving them new flavors of ice cream to see how quickly they eat their treats

D.
asking a group of randomly selected employees how happy they are with the new employee policy

Answer 1

D

Reason: A survey involves asking people for their opinions or responses. Options A is observational, B and C are experiments (manipulations).