What is the "fight or flight" response?

The "fight or flight" response is fundamentally understood as the body's physiological and psychological reaction to perceived threats or danger. When an individual encounters a stressful situation, the brain signals the body to prepare for one of two options: to confront the threat (fight) or to escape from it (flight). This response involves a series of biological changes—such as increased heart rate, heightened senses, and adrenaline release—designed to enhance survival in dangerous situations.

The other choices do not align with the definition of the "fight or flight" response. Relaxation techniques are meant to calm the body and reduce stress, which is the opposite of the immediate reaction triggered by perceived threats. Emotional responses to happiness pertain to feelings of joy and pleasure, unrelated to survival instincts. Finally, conflict resolution methods focus on addressing disagreements in a peaceful manner, rather than the instinctual and reactive nature of the "fight or flight" response triggered by threats. Thus, the identification of the correct answer highlights a key aspect of human physiology and psychology related to dealing with stress and danger.