Sugar
salt
water
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The physical barrier of the immune system is your body tissue and skin.
Answer: B. formal sanctions.
Explanation:
The formal sanctions are the actions that are official and legalized in nature and these are enforced by an authoritative force.
The rewards and punishments in the formal sanctions are official and enforcement by the law and these are also punishment in the academic setting.
The sanctions are in response for the approval and disapproval of certain behavioral response and actions. These sanctions are generally approved by the laws and rules.
The university can punished the person and may try to restrict the probation serving drinks to the minors is a offense. The punishment comes under the formal sanctions.
