Final answer:
The support at the fixed end of the W18x119 compression member prevents all types of movement, while the pinned end allows rotation but no translation.
Step-by-step explanation:
A student asks about the type of support provided at each end of a compression member with one end fixed and the other end pinned. In the context of the structural engineering, a fixed support restrains all degrees of movement, meaning it can resist vertical and horizontal forces as well as bending moments. In contrast, a pinned support allows rotational movement but not horizontal or vertical shift. Therefore, the fixed end of the W18x119 beam would prevent any type of movement including rotation, whereas the pinned end would allow the beam to rotate but not to translate in any direction.