convergent evolution. adaptive radiation. artificial selection. genetic equilibrium.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Often organisms seem similar in their outward appearances. For example, a porpoise and a shark seem closely related, but they are not. Such similarity is the result of
Possibilities:
- convergent evolution.
- adaptive radiation.
- artificial selection.
- genetic equilibrium.

convergent evolution.