The correct answer is C. it's a form of energy
Sound is a type of mechanical wave energy.
Answer: what? didn't understand
Explanation:
It is being used as a transition word .
In the lightning thief by Rick Riordan Luke Castellan wanted power.
A simile is a metaphor that straightforwardly analyzes two things. This is a type of illustration that unequivocally utilize interfacing words, (for example, like, as, so, than,), however these particular words are not generally necessary. So in here, the answer is A, since it does not compare two things and there is no words like like, as, so, or than.