20. The method of legal regulation of civil law can be characterized as: a) imperative method; b) dispositive method; c) recommendatory method; d) prohibitive method.

The correct answer is a) imperative method. The method of legal regulation of civil law is characterized as an imperative method. This means that the law is binding and enforceable, and individuals are obligated to comply with its provisions. The law sets out rules and regulations that must be followed, and failure to comply with these rules can result in legal consequences.