Explanation:

The analogy presented is 'Teeth : Chatter :: Leaves : ?'. We need to identify the relationship between the first pair and apply it to the third word. 1. **Analyze the first pair: 'Teeth : Chatter'** * 'Chatter' is the characteristic sound produced by teeth, often when a person is cold or nervous. 2. **Apply the relationship to the third word: 'Leaves'** * We need to find the characteristic sound produced by 'Leaves'. **Analysis of Options:** * **Option (A) Ripple:** A ripple is a small wave or undulation, typically on the surface of water, or a spreading movement/sound. While wind can 'ripple' through leaves, 'ripple' itself is not the primary sound made *by* the leaves in the same way 'chatter' is made by teeth. It describes a movement more than a specific sound of leaves. * **Option (B) Cackle:** This is a harsh, broken sound, typically associated with a hen or a person laughing. It is not the sound of leaves. * **Option (C) Rustle:** Correct. 'Rustle' is a soft, muffled crackling sound, such as that made by the movement of dry leaves or paper. This perfectly describes the characteristic sound of leaves, especially when moved by wind or footsteps. * **Option (D) Whistle:** This is a clear, high-pitched sound made by forcing breath through a small opening. It is not the sound of leaves. \nTherefore, 'Rustle' is the most appropriate word to complete the analogy, as it describes the characteristic sound of leaves.