What Is Precession

Multiple Choice

What is precession?

A) Precession is the action of a solid rolling up a slope, prior to rolling back down again.
B) Precession is the increase in economic activity before a recession.
C) Precession is the rotation of a solid around a fixed axis.
D) Precession is the rotation of an angular momentum vector around a vertical axis.
E) Precession is the oscillatory motion of an angular momentum vector as it rotates around a vertical axis.