Hi there !
You have a formule. You just have to apply it.
Let's do it then !
First of all, you must write the coordinates of the point E and F.
Therefore :
[tex]E(-2;-4)[/tex]
[tex]F(2;2)[/tex]
So here, we have :
[tex] x_{1} =-2[/tex]
[tex] y_{1} =-4[/tex]
[tex] x_{2} =2[/tex]
[tex] y_{2} =2[/tex]
Now, Let's apply the formula :
[tex]M((-2+2)/2 ; (-4+2)/2)[/tex]
[tex]M(0;-1)[/tex]
In short, the answer would be : B) [tex](0;-1)[/tex].
Hope this helps !
Photon