Answer: The correct option is
(D) 
Step-by-step explanation: We are given to find the equation of a vertical line passing through the point (-4, 7).
We now that
a vertical line is always parallel to the y-axis and is of the form

Since the given vertical line passes through the point (-4, 7) so from equation (i), we have

Substituting the value of k in equation (i), we get

Thus, the required equation of the line is 
Option (D) is CORRECT.