Answer:
It would be Einstein Relativity theory and Freud's idea of subconscious thought.
Explanation:
Before Freud introduced his theory, almost all experts in the field of psychology believe that our mind is only controlled by conscious force. The introduction of Freud's theory change experts analyze psychological problems. Einstein introduced the relativity theory that improve humans' understanding on how black holes interact with the universe
Answer:
Option B, Representatives of unions and companies negotiate new labor contracts, is the right answer.
Explanation:
A process through which the representative of the labor union bargains with the group of employees on various issues such as working conditions, salaries, compensation and rights for workers, and other benefits of workers, is known as collective bargaining. The collective agreements that both these groups reach following negotiations generally fix working hours, wage scale, training, overtime, health and safety and to participate in the affairs of the company.