La clase de matemáticas es _____ fácil que la clase de ciencias naturales.

A. mucho

B. más

C. pues

D. para

C and D are the same, umm??

yes, both are incorrect...

No, options C and D are not the same. Option C, which is "pues," means "well" or "then" in English and is not a comparative form. Option D, which is "para," means "for" in English and is also not a comparative form.

The correct answer to the sentence "La clase de matemáticas es _____ fácil que la clase de ciencias naturales" is option B, which is "más." In this sentence, the word "más" is used to make a comparison, indicating that the math class is "more" easy than the natural science class.

To arrive at the correct answer, you can recognize that the sentence is making a comparison between the math class and the natural science class. You also need to understand that the word "fácil" means "easy." Taking these elements into account, you can determine that the correct word to complete the sentence is the comparative form of "easy," which is "más."