What is the common resolution for a Plagal Cadence?

The common resolution for a Plagal Cadence is indeed the movement from the IV chord to the I chord. In classical music theory, a Plagal Cadence is often characterized as a "Amen Cadence," typically heard at the end of hymns. This cadence signifies a departure from the subdominant (IV) chord, which creates a sense of closure by resolving to the tonic (I) chord. The relationship between the IV and I chords provides a gentle, stable resolution, making it a favored choice in many musical compositions, especially in liturgical music.

The other options represent different types of cadences or chord progressions. The dominant to tonic progression (like V to I) is a V7-I authentic cadence, while movements like I to IV and ii to V are utilized in different contexts and do not define the Plagal Cadence. Understanding this helps clarify the unique qualities and functions of cadences in music theory.