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Their son’s test came back stating that he was qualified to be either a carpenter or a seamstress.

A comma conjunction combo can only come if there is an independent clause at either end of the comma, right? If I add a comma before the word, or, it would be incorrect right?

Does a comma have to come before the word: or?

I think that my sentence may be just fine without a comma, but I am not sure.

Emotion: sad Please help
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No comma needed.

"either an X or a Y" is a unit which should not be split up with a comma.

But "Either he could be an X, or he could be a Y." Here the second clause has a subject of its own.

Same for "and".

I went to the kitchen and got a glass of water.
I went to the kitchen, and I got a glass of water.
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Is there a nickname for the comma that comes before 'and'? An Oxford comma?
My understanding is that the so-called "Oxford comma" is one used before a conjunction in a list; e.g. bread, milk, and butter.

I do not see the need for this comma in most circumstances. It can also lead to ambiguity:

I left with Tony, my friend, and Simon.

In this example, did l leave with Tony (my friend) and Simon?
Did I leave with Tony, my friend and Simon?

Oxford comma - incorrect comma as I like to call it.

So, when do you use a comma before "and"? When you're merging two sentences into one.

She must be able to sing and dance.
She must be able to sing, and she must be able to dance.

That works for me!

It's all explained at "www.grammar-monster.com".

Reverse argument:

Mother, Father and I got on the train.

Am I telling Mother that Father and I got on the train? Or am I stating that all three of us got on the train?

Mother, Father, and I got on the train.

Much clearer. I always use the so-called Oxford comma. I think, more often than not, it removes abiguity rather than causing it. Also, don't commas indicate pauses in speach? And when you are speaking a list, don't you pause before the final "and?"

Oxford camma--abosolutely correct and essential comma, as I like to call it.
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