Plants are more efficient at acquiring carbon than are fungi,in the form of carbon dioxide, and converting it to energy-rich sugars

(A) Plants are more efficient at acquiring carbon than are fungi,

(B) Plants are more efficient at acquiring carbon than fungi,

(C) Plants are more efficient than fungi at acquiring carbon,

(D) Plants, more efficient than fungi at acquiring carbon,

(E) Plants acquire carbon more efficiently than fungi,
C是正解
BUT
我觉得B也对啊~~~
OG对此的解释是It must be clarify that in the form of carbon dioxide refers to carbon rather than to either plants or fungi

但是中间那个in the form of carbon dioxide不是插入语吗，插入语不是跟句子没什么关系吗，为什么OG要那么说啊。B到底错哪了呢~~~求解释~~

但是中间那个in the form of carbon dioxide不是插入语吗，插入语不是跟句子没什么关系吗，为什么OG要那么说啊。B到底错哪了呢~~~求解释~~