1 or 2 below? I’ve seen this written both ways. Is this a ‘notional’ thing?<br/><br/><br/>1) A comprehensive knowledge of the inner workings of the database and a proficiency in using Microsoft Access <b><i>is a prerequisite</i></b> for this position.<br/><br/><br/>2) A comprehensive knowledge of the inner workings of the database and a proficiency in using Microsoft Access <i><b>are prerequisites</b></i> for this position.<br/><br/><br/>Thank you.