Answer:
D. Fall
Step-by-step explanation:
Based on this description, we can tell that the day the author is describing is a day in the fall. We can see this due to various reasons. We learn that the leaves that were found in the forest were turning gold and red. This is usually a clear sign of fall. Moreover, we can also see that the day is described as "crisp." A crisp day is one that is slightly cool. These details contribute to developing the idea that the day being described happened in the fall.