Which one of the following is a synthetic drug?

In your locality,if a person is addicted to alcohol,what kind of behavioural changes do you observe in that person? Suggest measures to overcome the problem.

Given below are two statements with respect to the neurotransmitter,$Dopamine$.
Statement-$I$: Degeneration of $Dopamine$-producing neurons causes $Parkinson's$ disease.
Statement-$II$: $Dopamine$ level increases due to cocaine.
Choose the most appropriate answer from the options given below.

From which part of the plant $Erythroxylum$ $coca$ is cocaine obtained?

The transport of which neurotransmitter is interfered with by cocaine?

Which of the following substances,when consumed in excess,leads to increased fat accumulation in the liver?