Answer:
A
<h2>Production of goods increased and employment rose hope this helped mark brainiest</h2>
B ) a decrease in the supply of consumer goods
During the majority of WWI, the United States wanted to remain isolated in what many considered to be a European conflict. President Woodrow Wilson himself advocated isolationism until a series of conflicts drew the US into war against Germany.
The correct answer is functional fixedness.
Functional fixation is a type of cognitive bias that gives us the tendency, as human beings, to only use products and services as they are conventionally used.
It explains why we do not use the items more efficiently and / or cheaply, having been initially studied (and received this name) because of the research carried out by the psychological Karl Duncker.