Question

the tiny firefly squid has a wondrous ability: it can create its own light in the deep ocean. the squid gives off blue light thanks to special organs called photophores. some of these photophores are located at the tips of the squids long arms and around the squids eyes. thousands of smaller photophores cover the length of its body. the firefly squid may use its light - producing ability, known as bioluminescence, to communicate with other squid. the photophores light up in unison or in alternating patterns. this may help the squid signal mates or warn of danger. firefly squid also use their photophores to lure small fish before capturing them with their tentacles. in addition, this glowing ability helps the squid evade predators. in matching light from the surface water above, the squid becomes less visible from below. which is the best summary of the passage? with its light - producing abilities, the firefly squid is one of the most interesting sea creatures. other animals are drawn to the beautiful light, which stands out against the blackness of the deep ocean. the firefly squids light - producing photophores help this animal survive in its dark environment. by giving off light, the squid can attract both mates and prey and make itself harder for predators to spot. bioluminescence in the firefly squid primarily serves to light the ocean floor, helping the squid navigate its environment. using this light may also help the squid find food in the deep sea. the firefly squids photophores can light up all at once or in alternating patterns. with these light patterns, the photophores help in sending messages to other squid.

Explanation:

The passage details how the firefly squid's bioluminescent photophores aid its survival - attracting mates and prey, and evading predators. The second - option captures these key functions. The first option focuses more on the squid being interesting and the light's allure without survival aspects. The third option wrongly states that bioluminescence primarily serves to light the ocean floor. The fourth option only mentions communication and not other important functions.

Answer:

The firefly squid's light - producing photophores help this animal survive in its dark environment. By giving off light, the squid can attract both mates and prey and make itself harder for predators to spot.