What kind of comparison is the sentence Carol needs a quieter office than she has now?

The comparison in the sentence "Carol needs a quieter office than she has now" is a comparative adjective.

Here's why:

* Comparative Adjectives: These adjectives compare two things. They usually end in "-er" (smaller, faster) or use the word "more" (more beautiful, more difficult).

* The Comparison: The sentence compares the quietness of two offices: the one Carol needs and the one she has now.

* The Structure: The sentence uses the comparative adjective "quieter" to indicate that the office Carol needs is quieter than the one she currently has.

Let me know if you'd like more examples of comparative adjectives!