Answer:
The combination of stressed and unstressed syllable in the lines is called metrical foot.
Explanation:
A metrical foot is a single unit of measurement with a group of two or three syllables that form the basic unit of a poetic rhythm. They are made up of stressed and unstressed syllables.
A combination of stressed and unstressed syllables make a metrical feet, while a combination of metric feet make a metrical line and a combination of metrical lines make up a meter.
There are different types of metrical feet which include
