Answer:
A. Parentheses.
Step-by-step explanation:
We are asked to find the operation that should be performed first for calculations involving more than one arithmetic operation.
We use order of operations (PEMDAS) to solve a problem involving more than one arithmetic operation.
P = Parenthesis,
E = Exponent,
M/D = Multiplication or Division (Left to right)
A/S = Addition or subtraction (Left to right)
Therefore, we should remove parenthesis first in calculations involving more than one arithmetic operation.
