The number of dimension, a point has:
Explanation for the correct options:
According to Euclid’s postulate the three steps from solids to points as solids-surface-lines-points. In each step, one dimension is lost. The three steps from solids to point are solids-surfaces-lines-points.
A solid has dimensions, the surface has the line has and the point is dimensionless.
Hence, option(A) is the correct answer.