Explanation
Correct answer: A.
Choice A is the best answer. The convention being tested is the use of possessive determiners. The plural possessive determiner "their" agrees in number with the plural noun "the poems," thus indicating that the poems had eight panels of text stitched together in the shape of a traditional eight-pointed Lakota star quilt.
Why the other choices are wrong
Choice B
Choice B is incorrect because "it’s" is the contraction for "it is" or "it has," not a possessive determiner.
Choice C
Choice C is incorrect because "they’re" is the contraction for "they are," not a possessive determiner.
Choice D
Choice D is incorrect because the singular possessive determiner "its" doesn’t agree in number with the plural noun "the poems."
Student discussion
marcosat 0 likes
Subject verb agreement: with x, the poems. Plural