I think the answer would be false. Gateway drugs are addictive. These drugs include alcohol, cigarettes and marijuana which actually are very addictive. There are many evidences present in today's society on the effects of these substances to people who abuse.
Volleyball is considered a good aerobic exercise because you’re on your feet while playing, you’re working the same large muscle groups for more than 20-minute intervals and you have the opportunity to maintain 60 to 80 percent of your target heart rate.
Your answer would be D, push ups
Depending on what you're using the word for- you can say a drug is a medication, or you can say it's an illegal substance
A Common misconception is that exercising you're core simply means working you're abdominal muscles. core exercises also strengthen you're hips hope this helps