Which practice involves using threats to restrict fair trade in insurance transactions?

Boycott coercion and intimidation is a practice that involves using threats to influence or restrict fair trade in insurance transactions. This can occur when individuals or groups threaten to withdraw business or engage in other punitive actions unless another party complies with specific demands or refrains from certain practices. Such actions create an unfair competitive environment and undermine the principles of free enterprise and equitable treatment in the insurance industry. This practice can lead to consumers being deprived of choices and ultimately harms the market.

While other options describe different unethical practices related to insurance, they do not specifically pertain to using threats as a means of restricting trade. Unfair discrimination refers to treating individuals differently based on non-material factors, false advertising involves misleading information about a product or service, and defamation refers to false statements that harm someone's reputation. None of these involve the specific act of coercion or intimidation as a means of restricting trade in the way that boycott coercion and intimidation do.