Explanation
Correct answer: C.
Choice C is the best answer because it most logically completes the text’s discussion of Bali’s subak water management system. In this context, “interconnected” would mean joined or linked together. The text describes the various components of the subak system—“terraces, canals, and water temples”—and then states that they are “joined together into a single cohesive unit.” This context indicates that these elements are connected with one another in an integrated system.
Why the other choices are wrong
Choice A
Choice A is incorrect because “outmoded” would mean outdated or no longer in use. While the text does indicate that the subak system has “rich cultural, philosophical, and historical significance,” the text doesn’t suggest that the subak system is obsolete or not currently used.
Choice B
Choice B is incorrect because “informal” would suggest that the subak system lacks structure or organization. The text contradicts this by describing a complex system with specific components (“terraces, canals, and water temples”) that are “joined together into a single cohesive unit,” indicating formal organization rather than informality.
Choice D
Choice D is incorrect because “optional” would suggest that the various elements of the subak system are not necessary or required. The text indicates the opposite by stating that these elements are “joined together into a single cohesive unit,” suggesting that each component plays a necessary role in the functioning of the integrated system.