Respuesta :
Answer: A. Growth of the rose bush.
Explanation:
An independent variable in an experimental process can be altered
manually. The effect of which can be observed on the dependent variable. The changes occurring in the dependent variable by the virtue of independent variable is the outcome of the experiment.
According to the given situation, growth of the rose bush is the correct option. This is because of the fact that the effect of nitrogen fertilizers (independent variable) is to be measured on the growth of the rose bush which is the outcome of the experiment.
