Why does the Nevada manual say to be especially careful during the first rain of a season?
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A.
Drivers have forgotten how to handle wet roads since last winter.
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B.
Oil and water on the pavement mix and become very dangerous. Correct
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C.
Storm drains clog with debris and back water onto the lanes.
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D.
Windshield wipers deteriorate over dry months and streak the glass.
The answer is "Oil and water on the pavement mix and become very dangerous."
The Stopping section flags the season's first rain as unusually dangerous because oil that has built up on the pavement mixes with the water to create a slick surface. The wrong answers point at other plausible-sounding causes (driver rustiness, drainage, wiper wear) that the manual does not name.
The traps in the wrong answers
A. Drivers have forgotten how to handle wet roads since last winter.
Blames driver rustiness instead of the road-surface hazard the manual names. This answer blames driver skill rather than the oil-and-water road-surface hazard the manual identifies.
C. Storm drains clog with debris and back water onto the lanes.
Invents a drainage problem the manual does not mention as the reason for the danger. This answer guesses at a drainage problem rather than the oil-and-water surface hazard the manual names.
D. Windshield wipers deteriorate over dry months and streak the glass.
Blames wiper wear rather than the pavement-surface hazard the manual describes. This answer blames wiper wear rather than the oil-and-water road-surface hazard the manual gives.
This question tests your knowledge of Adverse Conditions in Nevada. Source: Nevada Driver Manual, "Chapter 3, Stopping," p.41..
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