The correct answer is: A. science.
Science can be defined as a body of knowledge about various phenomena in the world acquired by rigorous and verifiable testing methods and experiments. Science explores and provides objective information about the earth (geography and geology), substances found in the world (chemistry), living organisms (biology, botany, psychology), etc.
<span>runs east of the Red River of the North, cuts through Lake Winnipeg theres also one more reason i just dont remember it if you really want to know the last reason il get out my geo book n search it up k just message or most comany known as comment on this answer and il gladly find out the other reason</span>
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.