Concept:Metre is the rhythm of a line of poetry, counted in units called metrical feet.
Explanation:A metrical foot is one unit of stressed and unstressed syllables.
The name of the metre depends on the number of feet in a single line.
One foot is monometre, two feet are dimetre, and five feet are pentametre.
Six feet in a line are called hexametre.
Seven metrical feet in a line are called heptametre.
The prefix "hepta-" comes from Greek and means
7.
Option C, septet, means a stanza of
7 lines, not
7 feet.
Option D, triolet, is a French verse form of
8 lines.
Hence, the line with seven metrical feet is heptametre.
Answer:B. heptametre