Answer: Direct instruction
Explanation: Since Jaquan has never tried drugs, that is, he does not have his own experience on the basis of which to form an opinion and therefore an attitude on drugs, his attitude was formed on the basis of direct instructions. Thus, attitude can be formed by parents, teachers, and even the media by persuasion methods. In this case, the attitude was formed by direct instructions from the parents that explained all the negative aspects of the drug, from the time Jaquan was a youngster, so that these instructions were implemented gradually with all the bad aspects of drug consumption.