Opportunity cost is what must be ?

Opportunity cost must be the cost of a choice of an individual that is not the best possible choice for it.

Explanation:

Opportunity cost must be considered in decisions involving: budgeting, financial accounting, CVP analysis and resources that have alternative uses.

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