Plants forming new buds Sun shining on flowers Grass being wet in the morning Leaves changing color on trees
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these is the BEST sign that the fall season has begun?
Possibilities:
- Plants forming new buds
- Sun shining on flowers
- Grass being wet in the morning
- Leaves changing color on trees

Leaves changing color on trees