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4. What method of data gathering is used when doing a laboratory testing to find the
right vaccine to counter COVID-19?
A. Interview
C. Experiment
B. Survey
D. Observation
5. What method of data gathering is used when getting feedback from students
about the implementation of a new school policy?
A. Interview
C. Experiment
B. Survey
D. Observation​


Sagot :

Answer:

4.C

5. B

I hope it helps:)