Which of the following are reasons for using models : a. Give the exact answer
b. Tells you what you need to do
c. Save time
d. Take easy problems and make them easier

The correct answer is B) Tells you what you need to do.

Which of the following are reasons for using models?

Tells you what you need to do.

Scientists like to use models in their research because models help scientists visualize things they can’t see. And using the model on a minor scale, scientists can better study the phenomenon and come with a solution that can be applied.

When scientists use models, what they are doing is representing the issue at hand on a minor scale to describe the nature of the research and the possible solutions. Otherwise, the phenomenon is too big or complicated in real life, which often presents big challenges to scientists.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.