This question addresses a few points of interest for them. They want to determine if you chose this career for yourself or if one of your family members chose it for you. If you've chosen this career path for yourself, they're interested to learn if your family supports your decision or if they would have chosen a different career path for you. All of these factors can weigh heavily on your likelihood of success. Be honest and sincere, and whether your family chose this career path for you or not, impress on them that this is the career path of choice for you. Showcase your passion and sincerity. Discuss your support system and how your family and friends express their excitement for your career. You can also mention anyone in your family who may have had a similar path in the pharmaceutical industry.