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Covid-19 pandemic has affected every nation across the globe. Millions of people died. Scientists spent sleepless nights to develop vaccines to save human from extinction. Their efforts bore results by seeing the development of vaccines which have potential to reduce the catastrophic effects of Covid-19. Examples of these vaccines are: Pfizer BioNTech, Moderna, Astrazeneca, Johnson & Johnson and others. Research has been instrumental in developing these vaccines.

a. Using examples, briefly explain the role played by research in this situation. (10)

b. Which research design and research methods could have possibly been used? (15)

c. Explain how the vaccines discoveries will contribute to business development.