Which organization must approve the methods of taking fur-bearing mammals?

The California Department of Fish and Wildlife plays a crucial role in managing and regulating the state's natural resources, including fur-bearing mammals. This organization is responsible for ensuring that trapping methods comply with state laws and regulations aimed at conserving wildlife populations and their habitats. Approval by this department ensures that trapping practices are humane, effective, and sustainable, in accordance with California’s wildlife management objectives.

The other organizations listed may have relevant functions related to environmental protection or wildlife conservation, but they do not specifically govern the methods used for trapping fur-bearing mammals within California. The Environmental Protection Agency focuses more on environmental regulations and pollution control. The U.S. Fish and Wildlife Service deals with broader federal wildlife conservation efforts and law enforcement, while local wildlife authorities may manage specific local issues but ultimately adhere to the state regulations set by the California Department of Fish and Wildlife. Thus, the approval mandated by this state department is essential for the legal and ethical take of fur-bearing mammals.