Final answer:
Keira's discussion with the couple was not within the scope of her expertise as a real estate agent.
Step-by-step explanation:
No, Keira's discussion with the couple was not within the scope of her expertise. While it is generally acceptable to provide general information about the real estate market and financing options, Keira crossed the line by discussing specific listings and giving advice related to specific mortgage types. As a real estate agent, Keira should only provide information and advice that falls within her area of expertise and knowledge.