Final answer:
A vertical asymptote occurs when the denominator of a rational function is zero at a particular location, resulting in a vertical line that serves as a boundary for the graph.
The Correct Option is; A) Due to the denominator being zero at that point.
Step-by-step explanation:
A vertical asymptote occurs in a particular location based on the equation of a rational function when the denominator of the function is zero at that point (Option A).
A vertical asymptote occurs when the denominator of a rational function is zero at a particular location, resulting in a vertical line that serves as a boundary for the graph.
This happens because division by zero is undefined, and as the denominator approaches zero, the function approaches infinity or negative infinity. This results in a vertical line that serves as a boundary for the graph of the function.