maybe because learning to think is by using your brain to learn to things so by learning words its like learning how to think in a way. welcome.
Its A cuz u said "the politician greeted his supporters, adverb really means a phrase, expressing a relation place, time &circumstance.
Answer:
Why is the Sky Tree important to the people in Sky Land? It provides them with shade. It provides food for them.
A. It helps reveal the characters’ thoughts and feelings.