Nhận biết (M1)

In the aquatic kingdom, three species of fish exhibit distinct head and mouth morphology: the Broadface Chromis latus, the Mediumface Chromis mediocris, and the Narrowface Chromis angustus. Historically, it has been observed that under low visibility conditions in water the Narrowface Chromis exhibits the highest sensitivity to changes in water pressure, indicating a high ability to sense waves and pressure changes. It is followed by the Mediumface Chromis and then the Broadface Chromis. A scientist hypothesized that in vortex conditions where rapid water movement significantly affects all fish's visual capabilities, the fish with a stronger ability to sense water waves and pressure can better evade obstacles in the water than other fish, effortlessly avoiding obstructions. To test this hypothesis, researchers placed the three species into a vortex environment, introduced a series of obstacles, and recorded the success rate at which each species avoided the obstacles.

Which of the following experimental findings, if true, would most directly challenge the scientist's hypothesis?

• A.

  The Chromis latus, with the widest head and mouth, successfully evades half of the obstacles.

• B.

  Some Narrowface Chromis angustus exhibited a lower success rate at avoiding obstacles than other Chromis angustus.

• C.

  Despite their low sensitivity to water pressure, some Broadface Chromis latus successfully circumvented all of the obstacles.

• D.

  The Mediumface Chromis mediocris and the Broadface Chromis latus showed similar rates of collisions with obstacles, both struggling to avoid obstructions.