Demand determines price entirely when A) demand is downward sloping. B) demand is perfectly inelastic.

C) supply is perfectly inelastic.

Explanation:

In the case when the supply is perfectly non-elastic so the demand would measures the price entirely that means it calculated the overall price at the time when there is a perfectly non-elastic supply

So according to the given scenario the option c is correct

And, the rest of the options are incorrect

So the same is relevant

Low pressure helps us predict that there is going to be precipitation; however, since the temperature is above that of the freezing point of water, there will be no snow. Therefore, we can predict a rain shower.