Answer:
these are some examples:
Phonetics - the study of speech sounds in their physical aspects.
Phonology - the study of speech sounds in their cognitive aspects.
Morphology - the study of the formation of words.
Syntax - the study of the formation of sentences.
Semantics - the study of meaning.
Pragmatics - the study of language use.
=
I believe the answer is C
I would say C. “was”. It’s definitely not “am”, because that just sounds completely wrong. It’s not “are” because that sounds a bit wrong, too. It can’t be “were” because it’s only referring to one group, not many groups. The only answer it could be is C.