Conduct a mental list related to the condition of each driving element. if your list has unfavorable factors in one or more categories, your
a) drive will be predictable.
b) crash probability is at an elevated level.
c) fuel economy will be more efficient.
d) collision risk is at its lowest level.

The answer is letter b, crash probability is at an elevated level.

Explanation:

Getting a driver's license can be a tedious process. Besides being a palm-sweating and heart-pumping experience, learning to drive also requires a person to remember important things and information.

One of these is by conducting a mental list related to the condition of each driving element. This needs to be done because the driving environment changes every time you get behind the wheel. There are so many unpredictable weather, road conditions, vehicles and drivers. Remaining alert to such conditions and objects is very crucial.

If your list has unfavorable factors in one or more categories, your crash probability is at an elevated level. Crash probability refers to the likelihood or odds of having a car crash. An example of an unfavorable factor is having an impairment or being fatigued while driving. This can increase the chance or likelihood of having a car crash.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals