All except for D, that could be very damaging
I believe is true
For example, the pressure of becoming an adult, the progression of each school year like harder classes and tests, etc
You can't stay a kid forever is what most people say so it should be true
D) all of the above
All of these are barriers to physical activity
A. Marijuana alters you for the short time you are under the influence. It can cause anxiety, irritability, and sleep disturbances if, it is not a sativa. Sativa calms you and makes you not worry. It can also be B. because other marijuanas are meant to cause hyper activness.