D a microscope because the scientist will have to eventually view the strains up close to see the progress of the antibiotic
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https://en.wikipedia.org/wiki/European_migrant_crisis
Answer:
B. market
Explanation:
A market economy is an economic system in which the decisions regarding investment, production and distribution are guided by the price signals created by the forces of supply and demand. The major characteristic of a market economy is the existence of factor markets that play a dominant role in the allocation of capital and the factors of production.
