Final answer:
The normal body temperature range for ducks is 102-106°F (38.9-41.1°C) (option c). A duck's body temperature of 113°F (45°C) would be extremely rare and likely indicates a severe condition like fever and viruses, necessitating veterinary care (option b and a).
Step-by-step explanation:
The normal body temperature range for ducks is option c, which is 102-106°F (38.9-41.1°C). A duck's body temperature reaching 113°F (45°C) would be considered abnormally high and could be a potential cause for concern. For humans, a body temperature significantly above the setpoint can indicate a medical condition such as a fever or infection. Therefore, if a duck's body temperature were to reach 113°F (45°C), the potential cause could be similar to humans, including b. Fever and viruses, which could lead to an upward adjustment of the body temperature setpoint as the body's immune response to the illness.
In regards to how common this temperature is in ducks, a body temperature of 113°F (45°C) in ducks would be a. Extremely rare. This is significantly above the normal range for ducks and could be detrimental to their health. Immediate veterinary care would likely be necessary to identify and treat the underlying cause.
Hence, the answer is option c, b and a respectively.