When researchers discovered that cuttlefish have the ability to make themselves suddenly appear larger, they presumed that this behavior, called a "startle display, " was used to scare off predators. A long-term study, however, reveals that cuttlefish never use startle displays to scare off predators but instead only use such displays to scare off small fish that do not prey on cuttlefish. Which one of the following, if true, most helps to explain why cuttlefish use startle displays? ['Cuttlefish have acute senses and are able to change colors.', "Groups of small fish are likely to attract a cuttlefish's predators .", 'Unlike insects that use startle displays, cuttlefish are usually able to move faster than their predators .', "Small fish are more easily scared off by a startle display than are a cuttlefish's predators."]