In order to prevent forest fires, American forest experts have come up with a good way to "fire with fire": require forest managers to regularly choose weather with low wind speeds, low temperatures and high temperatures, and artificially burn small trees and shrubs under trees. Dry branches and dead leaves to prevent natural fires and help extinguish forest fires. which of the following can't be concluded from this? ['Preventing forest disasters requires forest managers to take the initiative, and "preventing" forest fires is an effective fire prevention measure.', 'Preventing forest fires should study the causes of forest fires and the main causes of forest disasters to extinguish them.', '"Fire prevention" forest disaster prevention measures are very inspiring and can be used by forest managers in seasonal forest defense.', 'Forest managers can prevent forest fires by regularly removing dry branches, dead leaves, weeds, small trees and shrubs in the forest.']