What is the colour of Black box, that is found in air- craft?

The correct answer is (a). The color of the black box is orange. It is made of a strong material that can withstand fire and impact. The orange color makes it easy to find in the wreckage of an airplane crash.

The other options are incorrect. (b) Red is the color of the emergency exit sign on an airplane. (c) Blue is the color of the sky. (d) Black is the color of the box, but it is not the correct answer.