Answer:
tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.
Explanation:
Answer:
the answer is genetic drifts.
So sorry not sure I would say part A but not a 100% sure
a is the aqnswer hope this had helped you if not tell me
