What is the most common form of the individual movement in a suite?

a. rondo

b. binary

c. sonata

d. variations?

B. Binary

a Rondo is a principal theme (sometimes called the "refrain") alternates with one or more contrasting themes, generally called "episodes", but also occasionally referred to as "digressions" or "couplets commonly used in the baroque/early classical period

A Sonata is a in summary, a composition of large scale works. (Usually divided into movements) that is a fundamental piece of the piano study

Variations is basically just a different form of the main melody in a piece. Very common in the baroque era. It takes the melody and puts it into a different key, or a different octave etc etc.

Your Answer is B