Which is true about drug addiction
most illegal drugs are not addicting
addiction occurs the first time a person uses drugs
it occurs when the body shuts down its own production of similar substances
addiction can occur after the first few uses of drugs

these are common warning signs of overtraining syndrome:

washed-out feeling, tired, drained, lack of energy

mild leg soreness, general aches, and pains

pain in muscles and joints

sudden drop in performance

insomnia

headaches

decreased immunity (increased number of colds, and sore throats)

decrease in training capacity/intensity

moodiness and irritability

depression

loss of enthusiasm for the sport

decreased appetite

increased incidence of injuries.

a compulsive need to exercise

answer(c); cultural values may have affected jack's grandmother's and aunt's belief about extended family;