I can read Spanish quite ____________ despite not speaking it very well.

The appropriate word to fill in the blank is "fluently." In this context, the sentence conveys that the speaker is able to read Spanish with a level of proficiency that reflects a natural, flowing ability, even though their spoken skills are not as strong.

"Fluently" describes the capability to communicate smoothly and effortlessly in a language, which aligns with the idea of reading Spanish well. While "easily," the chosen answer, does imply that reading is not a struggle, it does not indicate the level of proficiency and comfort with the language that "fluently" conveys.

The other options, while they contain relevant meaning, do not accurately capture the intended meaning in this context. "Quickly" refers to the speed of reading, "clearly" suggests the ability to understand and articulate, but neither directly addresses proficiency in comprehension and the ability to engage with the language in a fluent manner.