The theory that suggests that successful aging occurs when people maintain the interests and activities they pursued during middle age and resist any decrease in the amount and type of social interaction they have with others is known as

Activity theory

Explanation:

This theory states that elderly people have to stay active and maintain social interactions.  It helps to replace lost life roles after retirement. It says that they will receive life satisfaction if they are active somehow

answer; the correct answer is (ethics);

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'