Female deer have no need for antlers. Male deer are older than female deer. Antler growth is controlled by genes. Antler growth depends on behavior.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: In whitetail deer, females seldom grow antlers. Which best explains why male whitetail deer grow antlers but females seldom grow antlers?
Possibilities:
- Female deer have no need for antlers.
- Male deer are older than female deer.
- Antler growth is controlled by genes.
- Antler growth depends on behavior.

Antler growth is controlled by genes.