Economists refer to this kind of economic event as demand stock.
The demand increased very high than expected which also increased international oil prices in the following years so it is a demand stock. It is a positive demand stock as the demand shifts to the right.
A demand surprise is sudden that will increase or decreases demand for goods or services briefly. A high-quality call for surprise increases mixture demand and a demand stock decreases.
An unexpected exchange in the demand for a product or service. A wonderful demand stock will purpose a shortage and force the rate higher, even as a negative shock will cause oversupply and a lower price.
disclaimer:- your question is incomplete, please see below for the complete question.
a. demand stock
b. equilibrium event
c. expanding commodity event
d. supply stock
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