What effect does temperature have on respiratory rate?

The correct answer reflects that heat can lead to an increased respiratory rate. When the body is exposed to higher temperatures, it works to regulate its internal environment. Increased heat often causes the body to produce more energy, which in turn raises metabolic demand. As a response, the respiratory system increases the rate of breathing to supply more oxygen to the tissues and to expel carbon dioxide more efficiently.

In warm conditions, the body also may be losing more moisture, and the respiratory rate can increase to help maintain homeostasis. The lungs release moisture during respiration, which can also play a role in thermoregulation. Thus, when the body is subjected to heat, this physiological response is crucial for maintaining proper function and balance.

Examining the other options reveals that they do not accurately represent the relationship between temperature and respiratory rate. The idea that temperature has no effect does not consider the body's adaptive mechanisms in response to environmental changes. While cold conditions might have varying effects on respiratory function, stating that cold conditions increase the rate is generally not accurate as the body often conserves energy and slows down functions in colder environments. Extreme temperatures may certainly have a significant effect, but it is not just limited to those extremes; a range of temperatures can impact respiratory rates.