Answer: c
Explanation: mark brainliest pls
I’m pretty sure it’s A.
Time signature (is also known as meter signature, metre signature, or measure signature)
Answer:
I'd say the answer is someone who saw the event happened.
Explanation:
I don't know too much about arts but I'd say firsthand would be someone who saw it, the other answer choices do not make sense either. Sorry if this answer and/or explanation did not help.