Many students take courses to help with the_________of their knowledge

This is a problem in my teacher's assignment, the problem is to fill in the correct form of the word in the blank.

I need to fill in the correct form of the word "broad", I thought of the answer "broadness" but got the incorrect answer. Can you please explain why the answer is wrong and what is the correct answer?

  • Hint: "broad" is an adjective, e.g., a broad highway. Since the definite article precedes the word, it must be a noun, in this particular phrase. Look up "broad" and find a noun form. Aug 4, 2023 at 5:16

1 Answer 1


The noun most closely related to "broad" is breadth.

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