Question

The three main parts of a sonata-allegro movement are the exposition, development, and _____. rondo recapitulation coda cadenza

Answer 1

The three main parts of a sonata-allegro movement are the exposition, development, and "recapitulation," although sometimes these rules are "bent". 

Answer 2

The correct answer is B.

The sonata-allegro form is a  musical structure consisting of three main sections: an exposition, a development, and a recapitulation.

The first required section is an exposition which present the thematic material.

The exposition is followed by the development which explores its harmonic and textural possibilities. It moves from the original key to several different keys.

Finally, the recapitulation returns to the original key.