I think it’s B I’m not totally sure tho
Answer:
This is a primary source because your grandfather witnessed and participated in the Korean war. Therefore, his story is a primary source.
Explanation:
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- Discovery and Development
where drug begin to be researched in laboratory
- Preclinical Reserach
Involve animal testing for the drugs
- Clinical testing
the drugs began to be tested to people to find out if it's safe
- FDA Review
FDA carefully examined the data that had been collected
- FDA Post-Market Safety monitoring.