When merging onto an expressway from an acceleration lane, you should a: speed up as quickly as possible to get ahead of the expressway traffic beside you. b: yield the right-of-way to all traffic already on the expressway. c: enter the right lane of the expressway at any point, because you have the right-of-way.

B: Yield the right-of-way to all traffic already on the expressway.

Explanation:

Driving is an act that requires extreme responsibility. When you drive you must be a responsible driver who abides by all laws, signs and traffic signs. In addition, a responsible driver should keep his or her attention on the road, avoiding maneuvers that could cause possible accidents and paying attention to the structure and operation of your car. If you are a prudent and responsible driver when merging into an expressway from an acceleration lane, you should use the lane for all traffic already on the expressway.

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

well clustered together.

points close on a scatter diagram