USC Computational Neuroscience Advice

hello! im new to this so im not sure of formatting for but anyways…
im applying as a freshman first year applicant to USC, and my first choice major is computational neuroscience and second choice is human aging and development, which goes with my resume. however, i have done a lot of work in stem, coding, and also the humanities (health advocacy and lots of community service), and im having a little trouble with the why us usc prompt.

ive been researching alot on usc and i would really appreciate help with some of the more unique opportunities usc has in regards to neuroscience and stem, i hope to go to medical school in the future.

additionally, in my why us usc essay, do i have to mention a program directly related to my major, or is it okay to mention campus life programs and tie back my interest?