According to the author, what is the main reason for the decrease in trillium in the fores? What evidence does she give to support her claim?

c. the initial amount of money placed in the savings account

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.