in the classification of matter chart, letter a. would be a(n)\na acid.\nb compound.\nc element.\nd solution.

in the classification of matter chart, letter a. would be a(n)\na acid.\nb compound.\nc element.\nd solution.
Answer
Brief Explanations:
Elements are pure substances that cannot be chemically broken down into simpler substances. Compounds can be broken down chemically. Acids are a type of compound and solutions are mixtures.
Answer:
C. element