Even though sub-Saharan Africa often evokes images of drought and famine, researchers say that the area is the home of more than 2,000 grains, vegetables, roots, fruits, and other foods that
have the possibility for feeding the continent, even other parts of the world.
(A) have the possibility for feeding the continent, even - "have the possibility of..." is an unidiomatic construction
(B) have the possibility of feeding the continent, even of - same as A
(C) could feed the continent, so even with - parallelism issue - "with" isn't parallel to anything in the other part of the sentence ; Run on - (c) is not grammatically a sentence; if you use "so" as a conjunction, it should be followed by an independent clause (i.e., another complete sentence)
(D) could feed the continent and even - Correct
(E) could possibly feed the continent and, in addition, for even - parallelism issue - "for" isn't parallel to anything in the other part of the sentence ; also has two instances of redundancy:
could + possibly
and + in addition
Answer D
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When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long