Jamila plans to hold a counseling session for patients with respiratory disorders. which preventive measure should she focus on?
a. early diagnosis
b. smoking cessation
c. dust-free environment
d. sound sleep

I think smoking cessation would be the best as tobacco smoke results in many respiratory problems and eventually cancer. We have to minimize the main problem which may be smoking and then focus on dust, diagnosis etc.

I think she should focus on (b) smoking cessation because that effects health the most. It results in many respiratory problems, which can also lead to cancer.