Final answer:
Only the question regarding her client's immigration status is illegal.
Step-by-step explanation:
Regarding the legality of the questions asked by Brenda during the loan application, only the question regarding her client's immigration status is illegal. The question about the client's plans to have children is allowed under fair lending laws. In the United States, it is illegal to discriminate based on a person's immigration status, so asking about someone's immigration status in a loan application would be considered discriminatory.
On the other hand, asking about plans to have children is not illegal and is allowed under fair lending laws.