Which substance is obtained from $Cannabis \text{ sativa}$?

From which part of the plant is hashish obtained?

Which of the following is an example of a drug?

Which of the following is considered the most addictive drug?

Assertion : Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol.
Reason : $A$ drunken person usually feels tense and less talkative.

What are the effects of regular use of drugs or alcohol?