Final answer:
The student's question about Mary's temperature in Celsius cannot be definitively answered without additional context. However, the typical human body temperature is around 37.0°C, which makes 37.2°C the closest answer.
Step-by-step explanation:
The student is asking about the temperature of a person named Mary, expressed in degrees Celsius. Without additional context or a conversion from another temperature scale (such as Fahrenheit or Kelvin), it is impossible to determine the exact temperature. However, if we refer to the commonly accepted average human body temperature of 37.0°C, then the closest answer to this would be 37.2°C since it is the closest to the normal body temperature of a human. It's important to note though, that individual temperatures can vary.