Colleges are doing a poor job of imparting basic skill. According to a recent survey of personnel directors of major corporations, large number of entry-level workers lack ability in writing , Mathematics, and analytical skill. which of the following must be true if the argument above is valid?

College students in the past received better training in basic skill than students of today.

Few entry-level workers today have college degree.

Basic skills in writing , mathematics, and analytical are important for success in most jobs.

Entry-level workers at major corporations are generally representative of today's college graduates.