Question 45

The professor had a huge number of tests to grade.

The appropriate word to complete the sentence is "number," as it correctly quantifies countable nouns, such as "tests."

A) number

This option is correct because "number" is used to refer to a quantity of countable items, which in this case are the tests. It aligns with standard English grammar rules regarding count nouns, making the sentence both accurate and coherent.

B) amount

This option is incorrect because "amount" is generally used with uncountable nouns. Since "tests" is a countable noun, using "amount" would not be grammatically appropriate in this context.

C) aggregate

This option is incorrect as "aggregate" refers to a total or sum of things but does not function as a quantifier in this context. It does not appropriately fit into the structure of the sentence where a specific count of tests is needed.

D) stacks

This option is also incorrect because "stacks" implies a physical arrangement or a large number of items but does not serve as a quantifying term like "number." Therefore, it does not fulfill the grammatical requirements of the sentence.

Conclusion

The word "number" is definitively the correct choice as it accurately describes the quantity of countable items, in this case, tests. All other options fail to meet the grammatical criteria set by the sentence structure, making "number" the only appropriate selection.