Sierra has a lot of questions during class, but she's too shy to ask them in front of her peers. If Sierra wants to find out more information about something presented in class, what should she do?

a.talk to her instructor one-on-one after class

b.get over her shyness and ask her questions anyway

c.look up the answers to her questions on her phone during class

d.hire a tutor so that she can better learn the material