Is a belief system that prioritizes the study and progress of human interests over all others.

  Secular humanism.

Explanation:

  It´s a system that embraces human reason, ethics, and philosophical naturalism. Reject the idea that mankind is good because of a religion or a god. However, it does not assume that people born either good or bad.

  The fundamental idea of secular humanism is the search for truth, through science and philosophy. All the ideologies, either religious or political, must be examined by everyone and not simply accepted.

  I hope this answer helps you.

c. the coughing sounds

explanation:

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