Hi
simar121993 ,
Yes, it does change the degree of quality. But note that the original meaning of the sentence is maintained only when we have an option that is best.
But in this particular question, none of the options, which are maintaining the original meaning,are correct. So, we need to go for the one that changes the meaning.
Suppose we had two options as follows:
A) There are some perplexing questions in quantum mechanics
B) There are some very perplexing questions in quantum mechanics
In this case, I would have never gone with option B as it is changing the meaning or adding some degree. Since I have option A (which is 100% correct and retaining the original meaning) with me, I can confidently mark A as the answer despite the fact that B is also correct grammatically but is is not retaining the original meaning.
Let's discuss all the options here:
a) Perplexing questions there are in quantum mechanics -->
This construction is always incorrect on GMAT.b) There
is in quantum mechanics many perplexing questions
Questions are plural, hence it should be "there are"c) There
is lots of perplexing questions when it comes to quantum mechanics
Same as Bd) Perplexing questions there
is in the field of quantum mechanics
Same as Be) There are some very perplexing questions in quantum mechanics
Although changing the meaning, but the best answer choice.