Final answer:
B- smoking. It is a significant risk factor for numerous health issues including cardiovascular disorders and various types of cancers.
Step-by-step explanation:
According to the World Health Organization, the leading cause of preventable diseases is smoking.
Smoking is a risk factor contributing to numerous health conditions, including cardiovascular disorders, various types of cancers, and respiratory diseases. It also affects physical activity and overall quality of life.
While an unhealthy diet, physical inactivity, and excessive alcohol consumption are also significant behavioral risk factors, the detrimental effects of smoking are considered more severe.
It is worth noting, however, that the misuse of alcohol, categorized as alcohol abuse, has also been linked to numerous diseases, which includes liver disease, various forms of cancer, and disorders of the central nervous system.
Risky sexual behavior can also lead to preventable diseases such as Sexually transmitted infections (STIs), HIV and unwanted pregnancies.
However, among the choices given, smoking is identified as the leading cause of preventable disease. It's necessary to understand that Diseases caused by smoking are preventable with cessation of smoking. So one should try to aware everyone about the harmful effects of smoking.
Learn more about Preventable Disease