Forestry official: Many people think that if forest fires are not extinguished as quickly as possible, the Forestry Department is not doing its job properly. But relatively frequent, small fires clear out small trees and forest debris, which, if allowed to accumulate, would create the conditions for large, devastating fires. Ttherefore, it's best to let small fires burn The statement that relatively frequent, small fires clear out small trees and forest debris plays which one of the following roles in the official' s argument? ['It is a conclusion based on the premise in the argument that it is best to let small forest foes bum.', 'It is used as evidence against the contention that the Forestry Department is not doing its job properly if it does not extinguish forest fires as quickly as possible.', 'It is used to show what the consequences would be if the Forestry Department based its policies on the ideas most people have about how it should do its job.', 'It is offered as support for the contention that the Forestry Department is not doing its job properly if it does not extinguish forest fires as quickly as possible.']