Final answer:
The third movement of Beethoven's Fifth Symphony is a scherzo, which is a lively and often humorous musical piece that contrasts with the traditional minuet.
Step-by-step explanation:
The form of the third movement of Beethoven's Fifth Symphony is not the traditional minuet, but a scherzo. A scherzo is a quick, light, and often humorous composition that was frequently used by Beethoven as an alternative to the more traditional minuet in his symphonies.
Unlike the steady and elegant minuet, a scherzo typically has a rapid tempo and a rhythmic vitality that creates a more vigorous and playful character.