Jack claims that he has seen something bulge in the mountain top. He and his friends <em>believe that it is a beast or some type of monster.</em> But, it is actually the dead body of a parachutist. They let their imaginations get the best of them because the parachute is swaying in the wind.
Okay so I looked at this for a bit and this is the answer I got:
More than likely the linking word would be entire because it would change the mood of the passage to a little bit of a more positive mood. Hope this helped!