Answer: The correct answer is the one on the lower left.
Step-by-step explanation: You are looking for the equation that is five times the quotient of a number and 10.
Since it is five times the quotient, you are looking for an expression that has 5 outside of the parentheses, and a quotient means that there is division taking place. The only option that has 5 outside parentheses with division inside the parentheses is the lower left.