Answer: 2 and 5
Explanation: Part 1 is only a description of the action, and parts 3 and 4 introduce details from the character's past that enrich the narrative, but don't build anticipation. Part 2 introduces some anticipation in the last words "...he lay perfectly quiet and listened," which evokes in the reader a feeling of expectation for a relevant piece of auditory information. Part 5 has an even more intense effect, concentrated in the words "...he might never know again," which project an ominous feeling that events are about to unfold in the character's life.
There were 15 people total
The correct version is there are many threats to dolphins' continued existence, and humans are just one.
