This is a premise. The stimulus uses the claim that the red lights act as lures to support the conclusion that some deep-sea creatures can see red light. The fact that small deep-sea fish are attracted to the red lights on the creature's tentacles suggests they can see red light.

This is a premise. The passage explains that the red lights are shaped like a common food source for small deep-sea fish, which is why they may attract the fish. If the lights resemble the fish's usual red food, the fish are likely responding to that resemblance and can see red.

This is a premise. The passage notes this discovery to support its claim that some deep-sea creatures can see red light. This newly discovered deep-sea creature uses red light to hunt deep-sea prey, which supports the conclusion because its prey seems to react to the red light.

This is context and provides background information. The passage explains what most scientists believe to help us understand the author’s view, which disagrees with them. While scientists think no deep-sea creatures can see red light, the author argues that at least some can.

This accurately captures the argument’s main conclusion. The author argues that scientists need to "reassess" or "reconsider" their belief that no deep-sea creature can see red light. The author thinks this belief is wrong since a creature uses red light to attract deep-sea prey.