Select the letter that identifies the type(s) of exposition that would

be most appropriate to use to explore the following essay question:
What do the mysteries of Arthur Conan Doyle and Raymond Chandler have
in common? How do they differ?
a. classification; comparison and contrast
b. definition; classification
c. definition; cause and effect

a. classification; comparison and contrast

The letter that identifies the type(s) of exposition that would be most appropriate to use to explore the question "What do the mysteries of Arthur Conan Doyle and Raymond Chandler have in common? How do they differ?" is a. classification; comparison and contrast.

To determine the appropriate type(s) of exposition for exploring the given essay question, we need to analyze the question itself and the information it seeks to address. In this case, the question is asking for similarities and differences between the mysteries of Arthur Conan Doyle and Raymond Chandler.

Based on the question, the most appropriate types of exposition would be comparison and contrast. This is because the question is asking for a comparison, specifically what the two authors have in common and how they differ.

Therefore, the correct answer would be:

a. classification; comparison and contrast