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tolotolo
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In the GMAT world "which" modifies a preceding word. Which cannot modify a clause (subject + verb). Before "which" we put comma, but before "that" we don't.

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tolotolo
I am asking this question because I have seen that OG clearly explains that an answer choice is wrong because " and also" is redundant. However, I have also seen the appearance of " and also" in their own words. I mean they write things with this phrase but at the same time say it is redundant in the explanations( which means it is not the right usage?). The same case is for" comma, which". I studied some grammar prep book saying "comma, which" cannot refer to the preceding clause in the GMAT. Is that true?

In addition, for some other OG problems, some choices include " and also' but this time OG says NOTHING about it. Does it mean it is generally ok to use " and also"? I am really confused.

So "and also" is definitely wrong? Whenever you see it appear in the answer choice, you should eliminate that choice? Or it is just redundant but grammatically
right and we should keep it as the right answer if no other better choices appear?

Thanks a lot!

Hi,

You are almost right but there is GMAT prep questions that are exceptions:

https://gmatclub.com/forum/turning-away ... 42870.html


https://www.manhattanprep.com/gmat/foru ... t6929.html (you can see the whole discussion with Ron's comment)

I hope it helps
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tolotolo
I am asking this question because I have seen that OG clearly explains that an answer choice is wrong because " and also" is redundant. However, I have also seen the appearance of " and also" in their own words. I mean they write things with this phrase but at the same time say it is redundant in the explanations( which means it is not the right usage?). The same case is for" comma, which". I studied some grammar prep book saying "comma, which" cannot refer to the preceding clause in the GMAT. Is that true?

In addition, for some other OG problems, some choices include " and also' but this time OG says NOTHING about it. Does it mean it is generally ok to use " and also"? I am really confused.

So "and also" is definitely wrong? Whenever you see it appear in the answer choice, you should eliminate that choice? Or it is just redundant but grammatically
right and we should keep it as the right answer if no other better choices appear?

Thanks a lot!

Hi,

You are almost right but there is GMAT prep questions that are exceptions:

https://gmatclub.com/forum/turning-away ... 42870.html


https://www.manhattanprep.com/gmat/foru ... t6929.html (you can see the whole discussion with Ron's comment)

I hope it helps

Exactly, I was looking for this question. Thanks Mo2men :)

I would say don't go blindly. GMAC can punish you if you are a crammer of the rules. I have suffered this during my practice.

It's better to think logically as a Manager. ;)
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Just reiterating what Ron has said,

"X and Y" is normally used to indicate two different things.

"X and also Y" is normally used to bestow two descriptions on the SAME person or thing.

That's one reason to use "and also". Certainly there are others.
The point is that, under most circumstances, "and" is just fine. There should be some reason, normally related to immediate clarity, to append "also".

More importantly, this type of thing is tossed in there largely as a distraction.
If two forms are both acceptable"”"”and the differences between them are quite subtle (and/or related to style, rather than to actual concerns of mechanics or meaning)"”"”then, if they appear, their primary purpose is to pull your attention away from other, more important things. Watch out.

Edit:--
Some details from mikemcgarry as well,
The phrasing "and also" is not redundant. It is used for emphasis and clarity. Among other things, the two words are not redundant because we could not use "also" by itself in this context. We have to use "and," and "also" emphasizes something special about the conjunction.
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If I remember correctly, per e-GMAT 's lessons, and also is redundant and therefore incorrect.
egmat - Would love your input here!
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If I remember correctly, per e-GMAT 's lessons, and also is redundant and therefore incorrect.
egmat - Would love your input here!

No, don't go with this assumption my friend. I have seen OG questions that have "and also" marked as correct.

There are a couple of good explanations above. Please go through them once. :)
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tolotolo
I am asking this question because I have seen that OG clearly explains that an answer choice is wrong because " and also" is redundant. However, I have also seen the appearance of " and also" in their own words. I mean they write things with this phrase but at the same time say it is redundant in the explanations( which means it is not the right usage?). The same case is for" comma, which". I studied some grammar prep book saying "comma, which" cannot refer to the preceding clause in the GMAT. Is that true?

In addition, for some other OG problems, some choices include " and also' but this time OG says NOTHING about it. Does it mean it is generally ok to use " and also"? I am really confused.

So "and also" is definitely wrong? Whenever you see it appear in the answer choice, you should eliminate that choice? Or it is just redundant but grammatically
right and we should keep it as the right answer if no other better choices appear?

Thanks a lot!
You're currently using the wrong definition of "wrong". In SC, an option is correct if it is the best of the 5 options (it doesn't have to be perfect).

Although the correct option needs to be grammatically correct, concepts like redundancy do not lead to a yes/no decision in isolation. You must consider the other options before removing an option on the basis of redundancy.
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