OG 17-572 求助大神帮我分析一下这道题目

mudan0411

The tulu, a popular ornamental plant, does not reproduce naturally, and is only bred and sold by specialized horticultural companies. Unfortunately, the tulu is easily devastated by a contagious fungal rot. The government ministry plans to reassure worried gardeners by requiring all tulu plants to be tested for fungal rot before being sold. However, infected plants less than 30 weeks old have generally not built up enough fungal rot in their systems to be detected reliably. And many tulu plants are sold before they are 24 weeks old.
Which of the following, if performed by the government ministry, could logically be expected to overcome the problem with their plan to test for the fungal rot?
A
Releasing a general announcement that tulu plants less than 30 weeks old cannot be effectively tested for fungal rot
B
Requiring all tulu plants less than 30 weeks old to be labeled as such
C
Researching possible ways to test tulu plants less than 24 weeks old for fungal rot
D
Ensuring that tulu plants not be sold before they are 30 weeks old
E
Quarantining all tulu plants from horticultural companies at which any case of fungal rot has been detected until those tulu plants can be tested for fungal rot

OA: D  
明白为什么选D，但同时也纠结C，如果政府可以设法研究24周内就检测出fungal rot的方法，不也可以解决这个问题么？还是说C的错误原因在于政府只是去研究，但不保证成功？因为选项中说了"possible ways to test tulu plants less than 24 weeks old" 我就assume 这个possible ways 是effective ways了

RichardVeritas

C 我觉得就是你说的问题。Researching不一定会出结果。这里问的是一个东西如果执行就能解决这个问题。Researching是一个尝试，即使政府去派人研究，在有效结果出来之前是不能解决这个问题的。相比之下，D是强很多。没有对比就没有伤害哈

mudan0411

RichardVeritas 发表于 2017-11-21 12:04
C 我觉得就是你说的问题。Researching不一定会出结果。这里问的是一个东西如果执行就能解决这个问题。Resea ...

谢谢啦