<p>The correct answer is <strong>(B) attendees</strong>.</p>
<p>The word "attendees" is the plural form of the noun "attendee." In this sentence, we need a noun to describe the people who attended the Manufacturing Technology Show in Boston. Therefore, "attendees" is the most appropriate choice. </p>
<p>The other options are:</p>
<p>(A) attendants - This noun refers to people who are employed to provide a service or perform a task. It does not accurately describe the people who attended the show.</p>
<p>(C) attendance - This noun refers to the act of attending or being present at an event. It does not describe the people themselves.</p>
<p>(D) attending - This is a verb form and does not function as a noun in this sentence.</p>