The correct answer is: a) Sale and consumption of alcohol.
The Tamil Nadu Prohibition Act of 1937 was a law that prohibited the sale and consumption of alcohol in the state of Tamil Nadu, India. The law was passed in response to concerns about the social and economic problems caused by alcohol abuse. The law was controversial at the time, but it has been in effect ever since.
The law prohibits the sale, purchase, possession, consumption, and transportation of alcohol in the state of Tamil Nadu. There are a few exceptions to the law, such as for religious purposes. The law is enforced by the Tamil Nadu Prohibition Enforcement Wing, which is a special unit of the police force.
The law has been effective in reducing alcohol consumption in Tamil Nadu. However, it has also been criticized for being too strict and for leading to the development of a black market for alcohol.
The other options are incorrect because they are not related to the sale and consumption of alcohol. Option b) is about Untouchability practices, which are social practices that discriminate against people who are considered to be of a lower caste. Option c) is about Caste-based discrimination, which is discrimination against people based on their caste. Option d) is about Environmental protection, which is the protection of the environment from damage.