Answer:
B tercets :a free verse poem is made for three-line stanzas. C couplets: most free verse poems are composed of two line stanzas.
Step-by-step explanation:
the tercets help with the stanzas and give you a idea on what kind of poem it makes up. Poems divided into stanzas have different tone while poems with free verse have different feelings or sometimes even the same as tone with added description.