Can someone please explain what this means Javascript
<p>What is it asking me to do?  I am having trouble understanding what is actually needed here.... </p>

<blockquote>
  <p>Write the function setImage(). It will take one argument, the slot index. It should do the following:</p>
  
  <ul>
  <li>Randomly choose the index of the array above. (This array is images)</li>
  <li>Set the slot indexed by the argument to the be file name indexed by the random index 
  (Remember your testing for step 1. Instead of a string literal, you should use an element of the array images.).</li>
  </ul>
</blockquote>
