12. As envisioned by researchers, commercial farming of lobsters will enable fisheries to sell the shellfish year-round, taking advantage of off-season demand, standardize its sizes and colors, and to predict sales volume in advance.
(A) taking advantage of off-season demand, standardize
(B) taking advantage of off-season demand, to standardize
(C) taking advantage of off-season demand, standardizing
(D) take advantage of off-season demand, standardizing（B）
(E) take advantage of off-season demand, to standardize
答案B，我选C，总觉得its sizes and colors 指的是shellfish，如果指 commercial farming of lobsters 似乎意思不同。请NN解释这三个并列的具体意思。
我觉得lz的理解有点偏差，在这里，taking advantage是伴随动作sell的，表示利用...优势来sell。
而后面的两个to是与enable有关的，是平行结构。按照逻辑意思，就是enable fisheries to sell...,(),to satndardize..., and to predict...
个人浅见，若有错误，请不吝赐教～～～
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