The cause of Osgoods syndrome is unknown, nor is it known

karlfurt,

this is wrong : I am adding the correct usages...
'I don't eat X nor Y' -> I dont eat either 'X' or 'Y'
He is not tall nor big -> He is neither tall nor big/ He is not tall or big
He doesn't like neither X nor Y' -> He doesn't like either X or Y


I pick E here.

Thadipalam,

I agree that my last example was wrong, and I edited it. But not as you did. I wrote 'He likes neither X nor Y':

But the usage in the two firsts examples were correct : neither can be used with or wouthout neither. Neither can only be used together with Nor.

And E is clearly wrong because 'they' has no referent.

So my troubles remain....

You can use nor in this sense.....

Rearrange it to say

I don't know the cause, nor do I know why it is increasing

I think this is a valid statement

Anything with they is not right because they does not refer to anything. And D is wrong because that would have to be 2 seperate sentences for the second part to start with "unknown too"

I go for A

A too.

As explained above, the usage of pronoun 'they' is peculiar.
However, I don't like A usage of (unknown, nor) too

I think D.

Since B,C, and E use the refrent "they" who are not defined in the sentence.

Whereas "it" in A is not clear to what it refers to.

Whats the OA?

I would go with A too.

There seems to be a sentence break in D.

B,C and E are out since 'they' used in these choice doesn't have any reference.

Between A and D, I prefer A.

D seems to have a wrong split of sentence!

What is OA?

I think we can equate unknown with not known here. so i prefer A

X isn't Y, nor is it Z~

Straightforward (A) here.

The OA was posted with the question. It is hidden.
I posted it together with the SC in order to talk quickly about the issue, which is about the use of nor.

A seems to be obviously the right answer because it sounds better than the rest, and seems grammatically correct. But I would like to be sure.

Many of you think it is correct. Is there anyone who can really confirm?

Matt, you write :

X isn't Y, nor is it Z~

But here we have

X is Y, nor it is Z

It is like saying :

He is impatient, nor is he docile.

I believe, unless someone affirms the opposite, that it is wrong.

Better would it be(I think):

He is not patient, nor is he docile
OR
He is impatient and indocile
OR
He is neither patient nor docile.

I don't know if A is correct, despite the OA. There is the rule where one says that we have to take the best of the options. If, as I would believe, A is wrong, we cannot choose any of the answers. May be this is an incorrect SC which would never be proposed at an exam.

My worry is that I don't want to learn a new rule which appears to be wrong and then make a mistake during the exam.

Thanks for your comprehension.

Before it disappears for the eternity, I give this post one last chance to get an explanation!

Yeah, you got my attention Karl.

unknown and not known can be used interchangeably.

So my original grammar rule applies here.

The cause of Osgood’s syndrome is not known/unknown, nor is it known why the disease appears to be increasing in the United States.