I'm confused on what it is asking, somebody help please

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

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.