Is it better to write off the prompts or choose your own?

Hi,
I’m a rising senior who wants to apply early action to UMass Boston this year in the hopes of a full scholarship. I was filling out the application and I was wondering if it’s better to select one of their list of essay prompts or to write a different essay (or doesn’t matter, I suppose).

It doesn’t really matter - I’m pretty sure the full scholarship to UMB is automatic if you have a 3.5 recalculated GPA and a 1200 CR+M SAT score.