Answer:
The correct answer is A.
Explanation:
This sentence is correctly punctuated because it separates the initial adverbial clause with a comma, and then puts another comma before the conjuncting adverb "while," which is correctly used joining two sentences.
Does it have multiple choice? I know the answer, I just want to make sure it's in the multiple choice.
It would be "D. Express mail" that <span>guarantees next day delivery, although it should be noted that next day delivery can be arranged through other postal channels as well. </span>