Light indicates a reflection of your headlights in an animal's eyes.

RED

Explanation:

Red light indicates a reflection of your headlights in an animal's eyes.

Red light comes from the reflection of light is that reflects off the retina of the animals. Retina  of the animal's eye contain a special reflective layer called thetapectum lucidum that works like a mirror in the back of light. That is why when light is flashed on their eyes they reflect red color generally.

answer; i believe the answer is hydraulic action;

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.