The correct option is C Please bring the jar of cookies with chocolate chips in it.
An adjective phrase must be placed immediately after the noun it modifies.
From the
options, C has the correct placement. "With chocolate chips in it" is the adjective
phrase that modifies the noun phrase "jar of cookies". Hence option C is correct.
Option A is incorrect because the adjective phrase has been placed at the beginning of the sentence, whereas it should be placed after the noun.
Option B is incorrect because the phrase follows the adverb 'please' instead of the noun.
Option D is incorrect because the answer lies in C.