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.
B , articular cartilage is what covers the joint
The primary goal was to take control of the Holy Land. The Europeans believed that the Holy Land, where Jesus lived, should be in control of Christrians, and not Muslims, and they understood the Crusades as a "holy war" to bring the Holy Land under Christian control.
In practice, however, often the crusaders wanted glory and riches too.