?If tonight's temperature is going to drop into the middle 20s (°F) and a fairly stiff wind is predicted, probably the best way to protect an orchard against a hard freeze is to (assume that cost is not a factor)
a. ?use helicopters.
b. ?use wind machines.
c. ?sprinkle the crops with water.
d. ?put orchard heaters to work.
e. ?pray for clouds.
ANSWER: c
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