Topic: Group verb,

Best Answer Explained in Below-:

In the given sentence, "Trees have - of their leaves," the correct choice is C) cast. The verb "cast" in this context is traditionally used to describe the natural process by which trees lose their leaves. This term suggests a deliberate, although not conscious, action that trees undergo, particularly in the fall when deciduous trees shed leaves in preparation for winter.

Unlike the other options, "thrown" and "put," which imply a more intentional act by a conscious agent, "fallen" relates more to the end result of the process rather than the action itself. While "fallen" could make sense in a broader context, it does not fit the grammatical structure of the sentence as smoothly as "cast."

"Cast" evokes the idea of trees actively shedding leaves, and this term is often associated with the cyclical nature of life in trees, indicating a seasonal transition. Thus, "cast" is the most appropriate choice as it conveys both the act of shedding and aligns well with the context of the sentence regarding trees and their leaves.