Which One of the Following Would Be a Typical Fifth-Grade

Multiple Choice

Which one of the following would be a typical fifth-grade science fair project completed by the child without parental supervision?

A) Kinta demonstrated with tennis balls how the earth rotates around the sun.
B) Johann manipulated the amount of fertilizer he gave to two different sets of seeds.
C) Lena changed the amount of sunlight for two different types of plants.
D) Robert varied the amount of pressure in the tires of different bikes.