Final answer:
Room temperature is generally considered to be about 25°C. A blackbody at room temperature peaks in the infrared spectrum, making choice (b) the correct answer.
Step-by-step explanation:
The question asks about the temperature associated with room temperature and where a blackbody at room temperature peaks in terms of its electromagnetic spectrum emission. Room temperature is typically considered to be around 25°C (77°F).
As the temperature of a blackbody increases, the intensity of radiation it emits also increases, and the peak of the spectrum through which most of this radiation occurs shifts to shorter wavelengths. However, at room temperature, the peak emission for a blackbody would be in the infrared spectrum, not the ultraviolet, visible, or microwave spectrums. Therefore, the correct answer to the question is (b) 25°C; In the infrared spectrum.