At the fixed support (x=0), both slope ($\theta$) and deflection ($\delta$) are zero.

At the free end (x=L), the beam experiences its maximum curvature and displacement.

The deflection profile of a cantilever under point load is a cubic parabola.

Simple structural analysis model

Easily determines the worst-case design load for beam members

High moment concentration at the fixed end

Limited load-carrying capacity compared to simply supported beams

Balconies

Bridge wings

Aircraft wings

In structural mechanics, the slope is the first derivative of the deflection function with respect to the neutral axis.

Option B, C, and D are incorrect because they violate the fundamental boundary conditions of a cantilever beam where displacement and rotation accumulate toward the free end.