The number of dimensions, a point has
$\begin{align}
  & \text{A}\text{. 0} \\
 & \text{B}\text{. 1} \\
 & \text{C}\text{. 2} \\
 & \text{D}\text{. 3} \\
\end{align}$

Hint: First we recall the basics of geometry, then we discuss the point. We know that dimension is the measure of length in one direction, then we will see whether a point has length, width, or height and obtain the desired answer.

Complete step-by-step solution:
We know that geometry is all about shapes and their properties. Geometry is a branch of mathematics that studies the size, shapes, positions, angles, and dimensions of the things.
A point in geometry is a location and it is shown by a dot. Point is the very basic fundamental of geometry.

In the above diagram $A, B, C, D, E, F$ points but all points are individual and not connected to each other. A point has no size but we show it by a dot to know where a point is. A point has no length, no width, and has no height. A point only has its position. It means a point has no dimensions or has zero dimensions.
Option A is the correct answer.

Note: Dimensions are the measure of size, distance, region, or space of an object in one direction. Some examples of dimensions are length, width, height, and depth. For example, a line has one dimension i.e. length, a rectangle has two dimensions i.e. length and width.