Which sentence uses an adjective that tells how many? a. the carpenter will need many nails to build that bench. b. the truck delivered a large load of lumber to the site. c. the workers ate their lunches outside. d. this brass hardware belongs on the new door.

"girls"

explanation:

a subject of a sentence is a noun or pronoun that shows who/what is performing the action (or verb) of the sentence.

in this case, the sentence states that the girls see. the girls are the ones who are performing the action, so they are the subject.

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