The correct answer is: A. 'people skills' building.
Human relations is the study of how people interact with each other. It is a field of study that is concerned with the understanding of human behavior and the development of effective interpersonal relationships. Human relations is important because it can help us to understand and improve our relationships with others. It can also help us to develop our communication skills, our ability to resolve conflict, and our ability to work effectively in groups.
'People skills' are the skills that we use to interact with other people. They include skills such as communication, listening, empathy, and conflict resolution. 'People skills' are important because they allow us to build and maintain relationships with others. They also allow us to be effective in our work and personal lives.
Mass conformity is the tendency for people to conform to the norms and expectations of the group they are in. It is a social phenomenon that can have both positive and negative effects. On the one hand, mass conformity can help to create a sense of unity and belonging. On the other hand, it can also lead to the suppression of individual thought and creativity.
Weakening of unions is the process by which unions lose their power and influence. This can happen for a number of reasons, such as changes in the law, changes in the economy, or changes in the way that work is organized. Weakening of unions can have a number of negative consequences, such as lower wages, poorer working conditions, and less job security for workers.
In conclusion, the correct answer to the question "Human relations is worth studying because it contributes towards" is A. 'people skills' building.