Which of the sentences below displays the correct punctuation?

A:The patient looked at the doctor as though he had never been seen her before.

B:Even though Laura is very young she us already a skilled chess player.

C:Carlos asked me to buy the gift,since I know our friend's taste better than he does.***

Is this correct?

No, not C. It has an unneeded comma in it.

Thank you! Hmmm....I really thought the comma was needed.....I guess I was wrong!! Thank you....:)

If the dependent clause comes before the main clause, you need a comma to separate the two. See sentence B -- where should the comma go in that sentence?

If the dependent clause comes AFTER the main clause, no comma is needed. See A and C.

PS --

"CD" has been banned for posting all the answers.

I was already done with that part of the lesson....So what he had here I was all finished with. So, I did not need his answers. I do understand with giving all of the answers. We will not learn by not studying and understanding. Does the comma come after young? Thank you for your help.

Yes, after "young."

YAY!!.....Thank you!

You're welcome!!

No, the correct sentence would be C: "Carlos asked me to buy the gift, since I know our friend's taste better than he does."

To determine the correct punctuation in this case, you need to analyze the sentence structure and grammatical rules. In Sentence C, the punctuation is correct as there is a comma (,) placed after the word "gift" to separate the main clause "Carlos asked me to buy the gift" from the subordinate clause "since I know our friend's taste better than he does."

Remember that when a sentence includes a subordinate clause, which is a group of words that cannot stand alone as a complete sentence, a comma is typically used to separate it from the main clause.

In Sentence A, there should be a comma or some other form of punctuation to separate the independent clause "The patient looked at the doctor as though he had never been seen her before" from the dependent clause "as though he had never been seen her before."

In Sentence B, there should be a comma after the word "young" to separate the independent clause "Even though Laura is very young" from the independent clause "she is already a skilled chess player."