Answer:
a- a poetic foot made up of an unstressed syllable followed by a stressed syllable
Step-by-step explanation:
A iambic foot is a type of metric rhyme that consists in an unstressed syllable followed by a stressed syllable, it is often used in english poetry and was very popular among poets in the elizabethan era, and William Shakespeare wrote almost all of his work, novels and poems, in iambic foot.