The most common type of virus that causes foodborne illness is the a. tobacco mosaic virus b. cytomegalovirus c. norovirus d. poliovirus

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

we would need to see the picture to answer it