Sophia is signing up for her first college classes in several years — she took time off after her freshman year to get married and have kids, and she is worried that she won't be able to keep up with the younger students in her classes. what advantage does sophia have over the other, more traditional students in her classes?

I believe the correct answer is that she has more life experience, which instructors often respect.
She has been through a lot and learned a lot and had some time to study though life experiences, which gives her a good base and potential advantage over the other students. Having a car isn't that much of an advantage, and the other two options are disadvantages.