Question

which is a direct benefit of prohibiting nicotine and tobacco use in schools? an increase in student enrollment the prevention of second-hand smoke an increase in participation in sports a decrease in the sale of e-cigarettes

Explanation:

• For "an increase in student enrollment": Prohibiting nicotine/tobacco in schools doesn't directly cause more students to enroll, as enrollment is affected by factors like school reputation, location, or academic programs, not just this prohibition.
• For "the prevention of second - hand smoke": When nicotine and tobacco use is prohibited in schools, people (like students or staff) can't smoke on school grounds. Second - hand smoke comes from the smoke exhaled by smokers or from the burning end of a cigarette, cigar, etc. So, by stopping smoking in school, second - hand smoke exposure in the school environment is prevented. This is a direct result of the prohibition.
• For "an increase in participation in sports": Prohibiting nicotine/tobacco use doesn't directly lead to more students participating in sports. Sports participation is influenced by factors like interest in sports, availability of sports programs, and peer influence, not directly by this prohibition.
• For "a decrease in the sale of e - cigarettes": School - level prohibition of nicotine and tobacco use doesn't directly impact the sale of e - cigarettes, as e - cigarette sales are more related to commercial sales channels (like stores) and regulations on e - cigarette sales at a broader (e.g., city, state) level, not just school policies.

Answer:

the prevention of second - hand smoke