In the Indigenous intercropping system known as the Three Sisters, maize, squash, and beans form an ______ web of
relations: maize provides the structure on which the bean vines grow; the squash vines cover the soil, discouraging
competition from weeds; and the beans aid their two “sisters” by enriching the soil with essential nitrogen.
indecipherable
ornamental
obscure
intricate
Choice D is the best answer because it most logically completes the text’s discussion of the Three Sisters intercropping
system. As used in this context, “intricate” would mean made up of complexly related elements. The text indicates that in the
Three Sisters system, maize, squash, and beans form a “web of relations” in which the crops interact in various ways. The
text’s description of these interactions—the bean vines growing on the maize stalks, the squash vines keeping weeds away,
and the beans adding nutrients that the maize and squash use—provides context suggesting that this “web of relations” is
intricate.
Choice A is incorrect because describing the relationship among the crops in the Three Sisters system as “indecipherable,”
or impossible to comprehend, would not make sense in context. Although the text presents the relationship as complex, the
text’s description of the role that each crop plays makes it clear that the relationship is well understood, not
indecipherable. Choice B is incorrect because the text discusses the practical beneﬁts that each plant in the Three Sisters
system provides to other members of the system, showing that the relationship among the crops that make up the system is
not “ornamental,” or mainly serving a decorative purpose. Choice C is incorrect because describing the relationship among
the crops in the Three Sisters system as “obscure,” or unknown or poorly understood, would not make sense in context.
Although the text presents the relationship as complex, the text’s description of the role that each crop plays makes it clear
that the relationship is well understood, not obscure.