Hi Meaghan,
After reading the explanation for the correct answer choice I am still a bit confused why it is answer A. The explanation says that after the idea of communication with professional caregivers is presented at the end of the paragraph, it is not developed further. However, I thought the following paragraph was also about that topic. It discusses how the relative can be helpful in communicating the psychological progress with the professional caregiver and how they can "join forces". I interpreted this all to be an example of option choice A being supported.
Emma