The correct options are
B Treatment of a disease takes time.
C Diseased person can serve as the source of infection for others.
D Steps to prevent a disease causes less discomfort than treating it.
∙ After a person gets a disease, their body functions may or may not recover completely. It depends on the degree of the damage caused. Some diseases leave us with permanent side effects such as balding or pigmentation on skin, while some might also leave us bedridden for quite a while.
∙ Treatment of any disease takes time. This means that if someone is suffering from a disease they must take bedrest for some time, even if proper treatment is given for their body to recover.
∙ A person suffering from an infectious disease can serve as the source of infection for the healthy individuals.
∙ Hence, due to all these reasons it is believed that prevention is better than cure.