The controllable risk factor for infectious diseases is Drug abuse. So the correct option is A.
Taking drugs for recreational purposes has resulted in huge damage to the health of various individuals. These drugs have addictive components which make the consumers addicted to them and this has led to drug abuse.
The problem of drug abuse has resulted in a higher number of blood infections. The primary route of transmission of these infections is the use of contaminated needles to inject drugs.
The continuous use of these drugs weakens the body and makes it vulnerable to infectious pathogens. Thus any kind of infection could manifest itself in a person abusing drugs.
The continuous use of these drugs does make people addicted to them but with proper rehabilitation programmes, they are able to control their addiction.
Hence, unlike pollution, air and heredity, drug abuse is a controllable risk factor for infectious diseases.
Therefore, the correct option is A
Read more about drug abuse, here
https://brainly.com/question/11607765
#SPJ6
