The correct answer is:
rectal and otic/tympanic.
Explanation:
The rectal and otic/tympanic (ear) methods are considered the most accurate indirect methods for measuring core body temperature because:
Rectal temperature closely reflects the body's internal core temperature, making it highly reliable, especially in clinical settings.
Tympanic (otic) temperature measures the heat emitted by the eardrum, which shares a blood supply with the hypothalamus (the body's temperature regulation center), providing an accurate representation of core temperature.
Other options:
Axillary and oral: Less accurate;
axillary is affected by external conditions, and
oral may vary due to breathing or consumption of food/drink.
Oral and forehead: Oral is moderately accurate, but forehead (temporal) is less precise in certain situations.
Otic and oral: Tympanic is accurate, but oral is less so compared to rectal or tympanic.