prep 1-89

Indigolove

Methane, which has long been counted among the greenhouse gases that are implicated in global warming, comes both from natural sources such as bogs and from a host of human sources, including coal mines, leaking pipelines, landfills, and rice paddies.

(A) that are implicated in global warming, comes both from
(B) that are implicated in global warming, coming from both
(C) being implicated in global warming, comes from both
(D) implicated in global warming and coming both from
(E) implicated in global warming, that come both from


In choice B, E there is no verb, so elinimate...

The sentence is trying to say that Methane also is one of the greenhouse gases and is implicated in global warming.

C is gases being..... weird, so elinimate........

E implicated in.........and coming.........weird....

So, A is perfect