Sentence:  Fortunately , although only a few years ago they held the student at arms length , today the business houses welcome the opportunity to aid the student , not only from an increased sense of community <WSD>responsibility</WSD> but also from the realization that the student of today is the interior designer of tomorrow - that the student already is `` in the trade '' . 
Meaning of the word marked with <WSD> tags:  the social force that binds you to the courses of action demanded by that force; every opportunity, an obligation; every possession, a duty"- John D.Rockefeller Jr