A relative maximum is a highest point in that little area. Think of it as a top to a mountain in a mountain range. It's a peak, but it might not be the tallest peak.
A relative minimum is the lowest point in that little area. Think of it as a the bottom of a valley in some area. It's possibly one of many valleys, so might not be the deepest valley.
When we talk about where these things happen, we describe them based on their x-values. They happen at the x-value of that peak or valley.
There's a little peak on the left side and the x-value of that peak is x = -1.2.
There's a little valley on the right side and the x-value of that valley is x = 1.2.
The answer is A.