Can someone help me which one is correct

A. improvise --- vigilantly

Explanation:

It has to be improvise because improvise means to create/perform spontaneously without preparation. Since she didn't have enough eggs, she had to improvise on the recipe.

i think it is c. good luck!

i say that the right answer is: three personal subject pronouns. that’s because you will see “she” two times, referring to the librarian, and “they” one time, referring to the books. personal subject pronouns are used to replace common nouns or proper names.

the only possessive noun it’s present on the first sentence, when the speaker refers to “his” father.