What is it called when a performer adds a note to a melody or spontaneously makes up a melody on the spot?

Romanesque architecture can be characterized as:

a. small, intimate, and warm b. soaring, vertical, and uplifting c. thick, heavy, and massive d. irregular, unbalanced, and asymmetrical

The minuet is in ________ meter.

A. quadruple B. duple C. triple D. common