According to horticulturalists, a rose bush suffering from fungal infection may display "black spot"—dark, circular lesions on its leaves. A _______ rose bush, conversely, will feature vibrant foliage with a consistent, glossy green texture and no visible blemishes.
Which choice completes the text with the most logical and precise word or phrase?
withering
useful
basic
thriving
Correct Answer: D
Choice D is the best answer. The text contrasts a rose bush with "infection" and lesions with one that has "vibrant foliage" and "no visible blemishes." A plant in this good condition is logically "thriving" (growing well/vigorous).
Choice A is incorrect because "withering" would resemble the sick plant, not the vibrant one. Choice B is incorrect because while the plant might be useful, the description focuses on its physical health. Choice C is incorrect because "basic" does not provide a logical contrast to "infected."