Which of the following are normal pulse, respiration, and temperature (in degrees F) for a mature horse at rest?

The normal pulse, respiration, and temperature for a mature horse at rest typically fall within specific ranges. For a mature horse at rest, the average pulse rate is generally between 28 to 44 beats per minute, respiration is typically between 8 to 16 breaths per minute, and body temperature is around 99.5 to 101.5 degrees Fahrenheit.

The values in the selected response indicate a pulse rate of 42 beats per minute, respiration of 16 breaths per minute, and a temperature of 100.5 degrees Fahrenheit. Each of these values falls within the established normal ranges for mature horses. The pulse is at the upper end of the normal range, the respiration is at the high end but still acceptable, and the temperature is comfortably within the normal range.

This makes it the most accurate set of values compared to the other options presented, which show significant deviations from normal physiological parameters for a mature horse at rest.