A trochee is primarily a substitute foot.

a. True

b. False

The correct answer is (b) false - trochee isn’t primary a substitute foot. In poetry, trochee is a metrical foot consisting heavy syllable followed by light one (Latin, Greek) or stressed syllable followed by unstressed one. Trochee is faster than iambic metrical foot, which makes trochee the reverse of an iamb. However, trochee isn’t substitute for iamb.