The roots turn downward. The roots move horizontally. The leaves face toward the Sun. The stems curl around supports.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: How do sprouting plants exhibit positive gravitropism?
Possibilities:
- The roots turn downward.
- The roots move horizontally.
- The leaves face toward the Sun.
- The stems curl around supports.

The roots turn downward.