although never sighted
is wrong in C. why
we can not use ellipsis here
Let’s analyze Choice C:
appear on the surface of the Sun as dark spots although never sighted at: Incorrect.
1. Generally, “although” marks the presence of a dependent clause. This choice does not contain any clause after “although”. If we say that ellipsis is at work here, The SV pair that is understood is “Sunspots appear”. Notice that “sighted” is a verb-ed modifier and not verb. So we will have to say that the SV pair is understood. In this case, we have SV do not make sense issue. If we say that only “Sunspots” is understood, then the understood subject will be missing a verb. If we assume that “sighted” is the verb, then it renders the meaning illogical. So there is no possibility of ellipsis in this choice.
2. There is a meaning issue also with this choice. “although” seems to modify “Sunspots”. So now the choice suggests that Sunspots are seen on Sun’s surface but are never sighted on Sun’s pole. This is certainly changes the meaning of the sentence. Hence, this choice is incorrect.
Hope this helps.
thank you e gmat experts.