The environment has changed. Animals need leafy trees. Rocks can destroy trees. Trees give off oxygen.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The fossil record shows that trees have changed throughout the years. Which of the following conclusions would be best supported by the fossil record?
Possibilities:
- The environment has changed.
- Animals need leafy trees.
- Rocks can destroy trees.
- Trees give off oxygen.

The environment has changed.