Choose the sentence that does not include a usage error.

A) Today’s college students may have grown up in the age of music sampling and file-sharing; however, they should realize that cutting and pasting sentences from a Wikipedia article constitutes plagiarism.
B) Today’s college students may have grown up in the age of music sampling and file-sharing; nevertheless, they should realize that cutting and pasting sentences from a Wikipedia article constitutes plagiarism.

http://www.differencebetween.com/difference-between-however-and-vs-nevertheless/

Sentence A is correct usage.

it was B actually -.-

The sentence that does not include a usage error is B) "Today’s college students may have grown up in the age of music sampling and file-sharing; nevertheless, they should realize that cutting and pasting sentences from a Wikipedia article constitutes plagiarism."

To determine which sentence does not include a usage error, let's analyze each option:

A) "Today’s college students may have grown up in the age of music sampling and file-sharing; however, they should realize that cutting and pasting sentences from a Wikipedia article constitutes plagiarism."

B) "Today’s college students may have grown up in the age of music sampling and file-sharing; nevertheless, they should realize that cutting and pasting sentences from a Wikipedia article constitutes plagiarism."

Both sentences are grammatically correct and do not contain obvious usage errors. The words "however" in sentence A and "nevertheless" in sentence B are synonyms and both convey the intended meaning of contrast and continuation.

Therefore, both sentence A and sentence B do not include a usage error.