Which is the best description of a scorched earth policy?

the burning of fields in preparation for planting

the destruction of an opponent's resources

the mobilization of a nation's resources in war

the effort to switch from farming to manufacturing

The destruction of an opponent's resources

Explanation:

A second earth policy is a military strategy to use all the resources for the destruction of assets of enemies. These assets could be weapons, communication site, transport vehicle, and industrial resources. Furthermore, anything useful for enemies is also included in destruction, such as food, water, and agricultural storage.