Can you open it better because like I'm trying to read it I know it's about science but I can't really read all the words to help you with your question so please make another photo showing like a better picture of it please thanks
C is the main theme of this story, for the reason of it providing multiple clues of text evidence throughout the passage that leads back to option C. Therefore, option C should be your answer.
The correct answer is A. Predicate adjective. Loud is an adjective used in coordination with the past simple form of the verb be, to create the predicate "was too loud"