The answer here would be true
Nicotine causes the brain to release chemicals that make you feel pleasure but overtime you may need more and more nicotine to get the same effects can eventually lead to nicotine addiction which can lead to affects that cause decreased appetite heighten mood increase heart rate and blood pressure nausea diarrhea and increased alertness.
Answer:
Improve staff morale
Prevent the spread of infection and disease.
B and C I believe
Public speaking gives an advantage to their personal, social, and professional life. :)
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