( I really need this answer! :) John often indulged in petty crimes. However, his football skills earned him the role of captain of the football team. According to the life course theory, What effect would this role have on John's life?

A. John would resume drug peddling
B. John would quit his delinquent ways
C. John would marry
D. John would quit military service

( I don't need a explanation

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

Heat affects all vitamins. which vitamins are more sensitive to heat and leach into water? a. vitamin a and d b. vitamin b and c c. vitamin e and k d. vitamin d and c

Where are teens exposed to ads about tobacco products? on the radio in magazines near schools on television