Celeste is interested in studying the effects that natural disasters have on the value of goods and services in the affected areas. her area of study should be

Her area of study should be microeconomics.

Microeconomics studies how people and businesses make decisions concerning resources such as money, products and time. Using microeconmics, Celeste would learn how the natural disasters made individuals and businesses decide how to effectively use their goods and services. It also will see whether the natural disasters made the goods and services lose or gain value.

The answer is microeconomics

microeconomics refers to the branch of economics that focused on observing the interactions between individuals and firms when they're competing to obtain and utilizing resources.

Natural disasters would increase the rarity of the resources and will tend to increase the price of goods and services in that area.