Answer:
A
Explanation:
An asymptote is a line that a curve approaches, as it heads towards infinity.
It is easy to spot the asymptotes for any given rational function - simply work out which value of x would make the denominator zero.
Function A has asymptotes at x = -3 and x = 7. This is consistent with the graph, where the asymptotes are marked as red dash lines at x = -3 and x = 7
For info, function D has asymptotes at x = -7 and x = 3. So the shape of the curve would be the same as the given diagram, but it would be 4 units to the left.