What is the answer for choosing the right word unit 15 level a?

To provide the correct answer for "Choosing the Right Word" in Unit 15, Level A, I would need more specific information about the Words or context presented in that unit. Generally, this exercise involves selecting the most appropriate Word based on context, meaning, and grammatical structure. If you can provide the specific Words or sentences in question, I'd be happy to help you choose the right one!