Answer:
The answer to this question is given below in the explanation section.
Step-by-step explanation:
The correct objective statement is:
Movies should not be more than three hours long.
As we know that the objective is something that is achievable and should be SMART (specific, measurable, achievable, realistic , and time-bound)
Other options are incorrect because:
I have two dimes and a nickel in my purse. (it is not an objective, it is an ordinary statement)
Green is the ideal color for a baby’s room. (it is not an objective, it is an opinion)
Air conditioning is the best invention, ever! (it is not an objective, it is like a fact)