Mark the correct response among the given choices.
 
During a discussion in class, some students raised the following points. Choose the correct question you would ask to check their correctness.
 
1. A student said, “Adolescents do not need to worry about behavioural changes.”

What question would you ask to verify this statement?
 
2. Another student said, “If someone tries a harmful substance once, they can stop anytime they want.”

What question would you ask to verify this statement?