If the point $(5,0),(0-2)$ and $(3,6)$ lie on the graph of a polynomial . Then which of the following is a zero of the polynomial?

The correct option is A $5$

Since, a zero of a polynomial always lies on the $x$-axis as a point. In the given question the point $(5,0)$ is a point that lies on $x$-axis, so its corresponding $x$ value represents zero of the polynomial.

Therefore, $5$ is the zero of the polynomial.
Hence, the correct option is A.