A) yes- definitely! many mental disorders are genetically motivated
b) yes! a mental disorder can be a result of for example child abuse
so we already see that d. must be the correct answer.
As for physical factors, I think head trauma could be a good example.
Some escaped to Canada, some got doctor's excuses or joined the coast guard.
Answer:
Have a stronger sense of identity by the young adulthood phase of life
Explanation: