Option C: 2
The curve crosses the x-axis at point A (one zero) and touches (is tangent to) the x-axis at one point to the right of O (one zero). Total distinct zeroes = 2.
A zero is the x-coordinate of a point where the graph meets the x-axis. Crossing counts as one zero; touching (tangent) also counts as one zero (a repeated root, but still one distinct zero). So crossing at A + touching at one point = 2 distinct zeroes. Examiners expect you to distinguish "crosses" (1 zero) from "touches" (1 zero, repeated) and count distinct contact points with the x-axis.