While clinical trials are recorded as far back as 500 BC, many people not in the medical field or healthcare industry do not understand what is entailed in a clinical trial and what the different job titles represent. The interviewer asks this question to understand your communication skills and how you explain what you do to others. You want to briefly describe your job in easy-to-understand terminology while showing your passion for your line of work. For example, you could describe your work as a healthcare professional who plays a vital role in developing new medical treatments and therapies. You work closely with physicians and other medical professionals to ensure clinical trials are conducted safely and effectively. Then, you could explain that your responsibilities include monitoring study participants, collecting and analyzing data, and ensuring that study protocols are followed.