Joseph wright of derby's an experiment on a bird in the air pump features this technique, which means a dramatic use of light and dark:

The correct answer is tenebrism.
It is a technique which Caravaggio created back in the 17th century, which includes the usage of dramatic contrasts between light and dark. If you take a look at the painting I've attached below, you will see what I mean when I mention this contrast. 

Monophony monophony means music with a single "part" and a "part" typically means a single vocal melody, but it could mean a single melody on an instrument of one kind or another.( just a short note ) : )hope it