The correct answer is substance-related
Explanation: Substance-related disorders involve drugs that directly activate the brain's reward system. Activation of the reward system usually causes feelings of pleasure; The specific pleasure sensations evoked vary widely, depending on the drug. These drugs are divided into 10 different classes that have different but not completely different pharmacological mechanisms.
The city had more job opportunities in factories
I believe the answer is: Learner directed
Learner directed classroom refers to the type of classroom that encourage students' habit of self-learning and observation.
Even though this type of method often shows results in slower rate, it would increase the likelihood of the students able to found their own subject of interest since the early age
