Answer:
amount of fruit produced by the tomato plants.
Explanation:
The response variable is the variable whose changes are based on the other variables this we called as the dependent variables. It would be change under the experiments.
Therefore in the given case, since the experiment is conducted for figure out which type of brand fertilizer would be greatest amount so here the response variable is the value of the fruit that is generated by the plant who is deals in tomato and hence the same is to be considered