Answer: C. (-1, 2)
Step-by-step-explanation:
The center is the midpoint of the endpoints
→ [tex]\bigg(\dfrac{x_1+x_2}{2}[/tex] , [tex]\dfrac{y_1+y_2}{2}\bigg)[/tex]
→ [tex]\bigg(\dfrac{-7+5}{2}[/tex] , [tex]\dfrac{3+1}{2}\bigg)[/tex]
→ [tex]\bigg(\dfrac{-2}{2}[/tex] , [tex]\dfrac{4}{2}\bigg)[/tex]
→ (-1 , 2)
The midpoint is (-1, 2)