What is the longest period of time it may take to replace a renewable resource

a: 12 months

b: 25 years

c: 100. years

d: 500 years

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.