Sentence Correction

Although more expensive to set up than fossil fuel power, alternative energy sources, such as solar energy and wind farms, both of which could easily supply all of the US's energy needs, they would provide vast savings over time, not only in direct upkeep, but also medical costs due to lower cancer rates.

A) Although more expensive to set up than fossil fuel power, alternative energy sources, such as solar energy and wind farms, both of which could easily supply all of the US's energy needs, they

B) Although alternative energy sources, such as solar energy and wind farms, both of which easily could supply all of the US's energy needs, are more expensive to set up than fossil fuel power, they

C) Although they are more expensive to set up than fossil fuel power, solar energy and wind energy are two examples, both of which could supply easily all of the US's energy needs, alternative energy sources

D) Exemplified by solar energy and wind farms, both of which easily could supply all of the US's energy needs, alternative energy sources are more expensive to set up than fossil fuel power, they

E) Alternative energy sources, such as solar energy and wind farms, both of which could supply easily all of the US's energy needs, although they are more expensive to set up than fossil fuel power, they


OA B

Source: Magoosh

Option A - Incorrect
The subordinate clause marker is supposed to modify a sentence with a subject and a verb, but in this case, it's modifying a sentence that doesn't have a verb.

Option B - Correct
This phrases everything correctly and intelligently.

Option C - Incorrect
'they' is modifying solar energy and wind energy incorrectly. It is supposed to modify 'alternative energy...'

Option D - Incorrect
There is no conjunction between the two clauses in the sentence.

Option E - Incorrect
Two subjects are used together which is wrong. One of the subject functions as a modifier and the other platforms the action of a verb.