Final answer:
The possessive pronouns needed are 'her' for question 7 about Catherine's number, 'my' for question 8 about washing one's own hair, 'its' for question 9 about the tree's leaves, and again 'her' for question 10 about Julia's brother.
Step-by-step explanation:
The correct possessive pronouns to complete the sentences for question 7 is 'd. her', for question 8 is 'a. my', for question 9 is 'c. Its', and for question 10 is 'd. her'. When deciding which possessive pronoun to use, it's important to consider who the owner is in the context of the sentence. For instance, in sentence 7, you want to call Catherine, so you need her number. In sentence 8, if you're going to wash something, you would be washing your own hair. In sentence 9, the beautiful tree would have its own leaves, hence 'its' is the appropriate pronoun. Lastly, in sentence 10, if you saw Julia with a brother named Kumi, it would be her brother.