In this experiment, the limitations were
A. Boys as subjects and natural surface as track.
B. Only fifteen subjects and natural surface as track.
C. Boys as subjects and running without running shoes.
D. Natural surface as track and running without running shoes.
Answer:D
In this experiment, the limitations were
A. Boys as subjects and natural surface as track. B. Only fifteen subjects and natural surface as track. C. Boys as subjects and running without running shoes. D. Natural surface as track and running without running shoes.