Final answer:
The tympanic method is the best for assessing the temperature of a toddler. It uses infrared technology to measure body temperature quickly and without discomfort. For home treatment of systemic infections, oral administration of antimicrobials is typically the most appropriate and convenient method.
Step-by-step explanation:
The best method to assess the temperature of a toddler is D. Tympanic, which is the measurement of temperature using an ear thermometer. This approach is favored for its speed, safety, and minimal discomfort for the patient. Tympanic thermometers utilize infrared technology to measure the thermal energy emitted from the eardrum, which is a reliable indicator of the body's core temperature and is ideal for use with toddlers and patients who are critically ill.
For the temperature measurement problem given: If a thermometer uses a thermistor with a resistance that changes at a rate of a = -0.0600/°C, to find the temperature T when the resistance is 82.0% of its value at normal body temperature (37.0°C), we would set up an equation based on the given rate of change and solve for T. However, we need to note that for very low temperatures, the resistance of the thermistor would not decrease indefinitely, as resistance cannot become negative.