tuanquang269 wrote:
"Made possible by" is idiom, isn't it? or we choose based on the most shortest version?
For "made possible", "by" would be the best, idiomatically, but I would avoid relying solely on memorization of idiomatic phrasing to choose an answer, and use it more as a last test. Basically, any formulaic or ironclad strategies such as if X then answer is Y, especially when it comes to Verbal, are tricky (but that's another discussion!).
alex39 wrote:
is "made possible by" only flaw in the option D or and also is also incorrect?
The "because of" is certainly a detractor, as is the lack of emphasis on the conjunction (having "and also" at the end), but the overall wording of that answer choice ("because of Einstein's theory of relativity and also") is unwieldy.
Capricorn369 wrote:
I ignored option (C) and (D) becasue of expression "and also".
MGMAT SC puts expression "and also" in SUSPECT category(pg 161). Can someone suggest is it fair to ignore "and also"?
Cheers!
"And also" may seem a little redundant, since you're basically saying the same thing twice ("and" conjoins and "also" introduces an addition) but I wouldn't put a blanket ban on it, since there are some cases where it could be used effectively. For this particular question, "and also" is incorrect because when you say "Einstein's theory of relativity AND ALSO better ability to observe extremely distant astronomical objects", it seems to subordinate the second practical example (as if you said "I like apples and also oranges", it seems as if you liked apples a bit more, right?), which we don't want to do, because the prompt says studies have "evolved from the theoretical to the practical". Using the word "both" eliminates this risk.
Feel free to let me know if you guys want me to clarify anything, I'd be happy to help!