<p>Available through the school's guidance office is a job directory and a list of job referral centers that provide information for students in need of employment. No Error</p>
<p>.... </p>
<p>I had already guessed that the answer was A ("is"), but .... why CAN'T it be B?
does "job directory AND a list..." count as a plural noun......... ? What do I do when I see problems like this?</p>
<p>maybe i am thinking too much into this, but thx</p>
A is wrong, because it should be "are." There are two things available: the job directory and a list of job referral centers, so it needs to be plural.</p>
<p>when two singular nouns are joined by an "and" they count as a plural noun (you are referring to them collectively); if they are joined by an "or" they count as singular nouns. </p>
<p>from the previous poster's example, correct statements:</p>
<p>Bob and Joe play football.
Either Bob or Joe plays football.
Niether Bob nor Joe plays football.</p>