i think the answer is d sterilization
Random sampling means that members of a 'population' have equal chances of being selected. To carry out this type of sampling, you will need to use a table of random numbers.
Answer:
Gently swishing a nonalcoholic mouthwash around the mouth can help loosen tonsil stones and reduce the amount of bacteria in the mouth. Having less bacteria can help prevent tonsil stones from forming. Nonalcoholic mouthwash is available in drugstores and online.
Explanation: