The process by which we perceive and respond to events that threaten or challenge us is called

A) stress.
B) psychoneuroimmunology.
C) catharsis.
D) the immune reaction.

Stress

A physical or emotional response to external pressures or demands, often resulting in feelings of tension and strain.

Psychoneuroimmunology

The interdisciplinary study exploring the interactions between the nervous system, psychological processes, and the immune system.

Immune Reaction

The body's defense mechanism in response to foreign substances, involving the activation of white blood cells and the production of antibodies.