The adjective that answers the question "which one" in the sentence is "white."
Explanation:
1. The sentence is: "That white rabbit isn't afraid of me."
2. The word "white" describes the rabbit, giving us more information about it.
3. When we ask the question "which one" in the sentence, we are looking for the adjective that specifies which rabbit is being referred to.
4. In this case, "white" is the adjective that answers the question "which one" as it specifies the color of the rabbit.
5. Adjectives like "white" help provide more details and paint a clearer picture of the noun they describe.
