Answer:
The law of supply and demand, one of the most basic economic laws, ties into almost all economic principles in some way. In practice, supply and demand pull against each other until the market finds an equilibrium price.
Explanation:
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I believe the answer is: Reliability
Reliability in this context refers to the ability to provide consistent and accurate information in order to know the true difference before and after using the drugs, otherwise the data collected by Andrea would be inadmissible and it would mess up the whole research.<span />
Answer:
A void contract
Explanation:
A void contract is one that appears to be an agreement but lacks an essential requirement for validity and enforceability. A void contract is usually illegitimate contract which cannot be enforceable. For example, an agreement between a drug trafficker and his clients is a void contract because it is illegal.
