Respuesta :
Answer:
D. Who
Explanation:
A relative pronoun helps you to identify the noun or give more information about the noun.
who gave you more information about the noun 'dad' in the sentence above and that helps you decide the exact person running late for work
The answer is Who, the dad is the one running late for work and it helps to explain why Avon needs to rush. The relative pronoun is the word which helps develop the story with meaning it wouldn’t normally have.