The test my math teacher gave me was really difficult!

which of the following sentences correctly substitutes a demonstrative pronoun in the sentence above?

“the test she gave me was really difficult! ”
“my math teacher is the one who gave me a really difficult test! ”
“that was really difficult! ”
“this test, which my math teacher gave me, was really difficult! ”

I am not sure but i can narrow it down to the 2nd or last one

I know this because first of all, the other sentence are improper

I'd say D. This test, which my teacher gave me, was really difficult!

I'd say that cause "which my teacher gave me" is a prep and preps make sentences better?

Explanation:

Lets check .

A. The test she gave me was really difficult!

o...k, but who was "she"? not enough detail.

B. My math teacher is the one who gave me a really difficult test!

Ok, i almost chose this too, but, for me its too long. I'm not an English master, btw i hate English. its my worst subject at school, but I wouldn't want to say this long sentence with an explanation point. lol!

C. That was really difficult!

o...k.., but what was "that"?

D. This test, which my math teacher gave me, was really difficult!

o...k... i suddenly wonder why i chose this one, butit looks right .

so my answer is

D

hope this helps and im probably wrong

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to and without are prepositions, so a, b, and d are prepositional phrases. the adverb phrase is c, about the surprise.

explanation: