帮忙看看这道新版本中的语法题

2643301345

In virtually all types of tissue in every animal species, dioxin induces the production of enzymes that are the organism's trying to metabolize, or render harmless, the chemical that is irritating it.

(A) trying to metabolize, or render harmless, the chemical that is irritating it
(B) trying that it metabolize, or render harmless, the chemical irritant
(C) attempt to try to metabolize, or render harmless, such a chemical irritant
(D) attempt to try and metabolize, or render harmless, the chemical irritating it
(E) attempt to metabolize, or render harmless, the chemical irritant

这题的句子是什么意思，我怎么连句子也看不懂。 非常谢谢

kiwifoodtown

如果把划线部分改成attempt to metabolize the chemical irritant，or render the chemical irritant harmless 你是否能看懂了呢？