Answer:
Option B==> to answer questions and analyze issues.
Explanation:
Models in economics can be likened to an assessment used in the determination or analysis of economic situations. It is this models in economics that are being used to find the roots of these problems and it is also used to solve the problems too.
Economists is the term for people studying economics and its principles. And one of the instruments for studying and explaining economics is the use of models. The models are being used by economists to ANSWER QUESTIONS AND ANALYZE PROBLEMS.
The flood of immigrants began to alarm many native born Americans. Some feared job competition from foreigners. Others disliked the religion or politics of the newcomers. During the 1850's, the America Party, also called the Know-Nothing Party, demanded laws to reduce immigration and to make it harder for foreigners to become citizens. Although the part soon died out, it reflected the serious concerns of some Americans.
Answer:
the direct supervision model
Explanation: