Vapor pressures are usually reported in references at an assumed standard temperature of 20°C. Approximately what temperature is that, in everyday terms?

The selected response is correct because 20°C is commonly recognized as room temperature in many contexts. This temperature is comfortable for most indoor environments and is typical for everyday settings where people conduct activities such as working or relaxing.

In contrast, options such as "Too hot to touch, but below boiling" would imply a higher temperature that could create discomfort or safety concerns, suggesting temperatures above 40°C, which isn't reflective of a typical indoor environment. "Right at the boiling point of water" references 100°C, far above room temperature and not applicable in normal situations. The choice of "Just above freezing" signifies a temperature around 0°C, which is significantly cooler than 20°C and would be more relevant for cold environments rather than standard indoor conditions.

Thus, identifying 20°C as room temperature aligns well with common experiences, making it the best choice.