Answer:
Option A makes more sense out of the bunch.
B - keeping on reading doesn't help if you don't understand what the topic is, to begin with. like zoning out on a really difficult lesson and only listening halfway. it will be super difficult without the introduction.
C - Asking for help is cool and all but you'll have to do it yourself at some point and when that happens, you won't know how to do it due to lack of practice.