Which of the following expressions is completely simplified?

Answer: I think that it's either A or C because B and D aren't even simplified at all. They are still in an equation untouched by anyone trying to solve it.
Step-by-step explanation:
For this case, we must indicate which of the listed expressions are completely simplified.
It is observed that in options B and D it can be simplified by applying distributive property.
While in option C, similar terms can be added.
Thus, option A is the only completely simplified expression.
Answer:
Option A