Which physiological process is triggered to aid in temperature regulation during stress?

In response to stress, the body activates a series of physiological processes to maintain homeostasis, one of which involves temperature regulation. Increased sweating is a key mechanism in this context. When an individual experiences stress, the sympathetic nervous system is stimulated, which leads to an elevation in sweat production. This sweating serves to cool the body down through the process of evaporation, especially if stress leads to an increase in body temperature.

Additionally, sweating is a part of the body's overall response to prepare for action ("fight or flight") during stressful situations. While factors such as increased heart rate and muscle tension also play a role in preparing the body to respond to stress, it is the activation of sweat glands that specifically aids in managing body temperature during these moments.

The other options do not effectively contribute to temperature regulation in a stress context, with processes like reduced heart rate and decreased blood flow typically observed in different physiological scenarios.