What would be the proper placement of commas before "and" in this situation?
I think that A, B, C and D are useful qualities and will help her complete the assignment.
What would be the proper placement of commas before "and" in this situation?
I think that A, B, C and D are useful qualities and will help her complete the assignment.
See this article on the Oxfors, or serial comma: http://en.wikipedia.org/wiki/Serial_comma .
The comma is obligatory when separating clauses, but not in other cases.