On a highly humid day, how may the weather feel to the body?

Correct answer: More sticky

Direct answer: A, more sticky. Humidity is the amount of water vapour in the air. On a highly humid day, the air already contains a great deal of moisture, so sweat evaporates more slowly from the skin. Since evaporation removes heat from the body, slower evaporation makes cooling less effective and the air may feel muggy, clammy or sticky. B is wrong because high humidity does not mean that the weather is icy; temperature may be high, low or moderate. C is the opposite of the condition: highly humid air is moist, not completely dry. D is wrong because humidity alone does not always make weather cold; humid conditions can feel hot and uncomfortable, though the exact sensation depends on temperature, wind and other factors. The question asks how it may feel, not what the temperature must be. Memory cue: humid air slows sweat evaporation, so the body may feel sticky. Do not say that humidity always raises temperature; it mainly changes evaporation and the way conditions feel.