Sentence Correction (SC) | Re: Scientists have recently discovered what could be the largest and olde

Although I have not figured why A is the correct answer, here is a question that is similar to this one.
https://gmatclub.com/forum/in-the-search-for-alien-life-astronomers-have-recently-157793.html#p1256000
I got both questions wrong, but comparing these two questions may provide some insights.

Statistics : Posted by arsene1379 • on 03 Jun 2003, 16:29 • Replies 86 • Views 141678

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