How do you write an exposition?

Question

i know it's an argument of sorts, but how does one go about structuring it?

Answer 1

Many road accidents happen at night. A major reason for this is that certain colors are not easily observed in poor light conditions. Thus cars painted in those colors are not easily noticed by other drivers.

One solution, would be to legislate that all cars be painted yellow or white. This would overcome the problem of poor visibility due to car color and thus reduce traffic accidents related to it.

Yellow and White are the two paint surfaces that reflect most light. For this reason, yellow is used as a background on road signs and other important signals. Moreover, yellow and white are not generally problems for the colour-blind.

The problem with this solution is that people have strong preference with regard to color. They like their cars to have some distinctiveness. It is an emotional issue.

Although there may be emotional resistance to this idea of painting all cars yellow or white, the life saving benefits must surely outweigh the conditioned color fads of motorists.

It is generally an accepted practice to provide an overview of the question or assertion being addressed in the introduction  (thesis).

The second paragraph contains the main assertion relating to the thesis. In some texts there may well be more than one assertion to be examined.

Generally the "for" argument" is stated first, and the "against" argument last.