Respuesta :
The correct answers are:
The number of cavities each person has; and observational study.
Explanation:
Quantitative data is data that can be described using numbers. Â The only one listed that can be described with numbers is the number of cavities each person has.
Observational studies are ones in which a researcher observes but does not interfere. Â Walking the cafeteria and seeing who has what type of lunch is a method of observation, so this is an observational study.
Answer:
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Step-by-step explanation: