1.

Which of the following statements about the cleaner wrasses is true?

A.    They regard 'roamer' fish as important clients.
B.    They take great care not to hurt any of their clients.
C.    They are too frightened to feed from the mouths of certain clients.
D.    They are in a strong position as they can move to find clients elsewhere.

2.

The writer uses business terms in the text to...

A.    illustrate how fish negotiate rewards.
B.    show how bigger fish can dominate smaller ones.
C.    exemplify cooperation in the animal world.
D.    describe the way fish take over a rival's territory.