Answer:
Option: C is correct.
c) The length of the altitude is equal to the length of one of the segments of the hypotenuse.
Explanation:
By the Right Triangle Altitude Theorem:
The measure of the altitude drawn from the vertex of the right angle of a right triangle to its hypotenuse is the geometric mean between the measures of the two segments of the hypotenuse.
From the figure we could say that:

As the hypotenuse is divided into divided into two equal parts since the altitude bisects the hypotenuse of the right triangle.
This means that:
CD=DB
Hence,

Hence, we could say that:
c) The length of the altitude is equal to the length of one of the segments of the hypotenuse.