Personally, I kno that elderly applicants for US citizenship may qualify for exceptions. Those above 50 years with 20 years as a green card holder. And those above 55 years with 15 years as a green card holder, can take the citizenship test in their native language. Above 65 years with 20 years as a green card holder may also take an easy version of the civics test.

I think so. Check USCIS website for the information