Although it was old and needed a lot of work, carla knew this was the house for her. 3. in this sentence, what is the antecedent of the pronoun it? a. carla b. her c. work d. house

Replace "it" with "house" and see if it makes sense.

A pronoun is a word that can replace a noun.

Examples are it, he, she, they, and we.

              A pronoun and its antecedent (the thing to which it refers) have to agree in number and person. For example, “a box of chocolates” could also be referred to as “it,” not “they/them” because “box” is a singular item, regardless of the number of chocolates inside of it. 

The correct answer is (d). 
    
                                                                                       ~Zєυѕ 

She is persuading him to do better