Answer: C) 
Step-by-step explanation:
From the given figure it can be seen that the centre of the circle is at (-3,1)
and the distance from the center to the boundary = 7 units.
i.e. radius of the given circle = 7 units
We know that , the standard equation of circle is given by :-
, where (h,k) represents the center of the circle and r represents the radius of the circle.
Therefore, the equation of the given circle will be:-