C- women metabolize alcohol slower than men due to higher body fat % and lower amounts of dehydrogenase which is an enzyme that breaks down alcohol
Answer:
The children are experiencing natural reinforcement.
Explanation:
Sandra's children are very successful in school and that is a stated natural reinforcer.
Natural reinforces occur as a result of their behavior without involving others expressing their approval of their behavior.
Sandra is trying to foster this natural reinforcement with positive social reinforcement, "but she does not always remember".
Density is mass per volume 
With data: 
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Hope this helps.
What is the question? May I ask.
