ANSWER
A. (6, -2)
Step-by-step explanation
Let's graph these three vertices,
The fourth vertex must be at the same distance from (0, -4) as vertex (3, 7) is from (-3, 5),
Note that the horizontal distance between these two points is 6 units and the vertical distance is 2 units. The fourth vertex is,
![(0+6,-4+2)=(6,-2)](https://img.qammunity.org/2023/formulas/mathematics/college/nfve5i7jgwxykskiwx3genstslgmqdsg2l.png)
Hence, the fourth vertex is (6, -2)