How is the rhythmic approach in a recitative best described? Slow and plodding
Flexible and free
Absent
Strict and fast

The rhythmic approach in a recitative is best described as

Flexible and free.

Explanation:

Rhythm is "an ordered recurrent alternation of strong and weak elements in the flow of sound and silence in speech," according to Merriam-Webster online dictionary, which describes the accent, meter, and tempo of the voice.

A recitative is a narrative that describes the action, thought, or emotion in an opera, oratorio, cantata, or other multi-movement vocal compositions, usually following the natural flow of the language.  It is a speaking composition and therefore free and flexible rather than strict and fast.

In an opera, oratorio, cantata, or other multi-movement vocal compositions, a recitative is a narrative song that describes some action, thought, or emotion. The recitative follows the natural flow of the language and is more of a speaking composition than a singing composition.