Question

one characteristic of the romantic period was
an interest in innovation.
the use of self - control.
an emphasis on order.
the use of imagination.

Explanation:

The Romantic period in arts (literature, music, etc.) emphasized emotion, individualism, and imagination, contrasting with earlier periods' focus on order/self - control. Innovation was more associated with later modernist movements. So the characteristic of the Romantic period is the use of imagination.

Answer:

the use of imagination.