Question 5 of 10 2 Points
To test how fertilizer affects tomato plants, a farmer divided a field of young
tomato plants into 10 plots of equal size. The farmer then put fertilizer on half
of the plots and no fertilizer on the other half of the plots. The control group
in this experiment was:
A. all the plots in the field.
B. the tomato plants in all the unfertilized plots.
C. all the tomatoes planted in the field.
a
D. the tomato plants in all the fertilized plots.