Animal welfare refers to respecting the rights of animals, protecting the ecological environment and promoting the coordinated development of human and animals; Environmental welfare, i.e. providing animals with appropriate accommodation; Health and welfare, i.e. to minimize animal injuries; Behavioral welfare, that is, to ensure the freedom of animals to express their nature; Psychological welfare, that is to reduce animal fear and anxiety.
According to the above definition, which of the followings does not involve animal welfare??
Take a variety of reward methods to stimulate monkeys to perform difficult actions