Prostitution in Mumbai is when people pay money to other people (usually women) to have sex with them. It's not a good thing, and it is against the law, but unfortunately it still happens.
Some women might decide to become prostitutes because they don't have enough money to support themselves or their families, or because they feel like it's their only option. Others might be forced into it by people who want to make money off of them.
Prostitution can be dangerous for the women involved because they might get hurt or get sick from sexually transmitted diseases. It's also not fair for them to have to do this just to survive.
There are organizations in Mumbai that try to help women who are involved in prostitution. They provide them with support and resources to help them get out of the situation and start a new life. It's important to remember that everyone deserves to be treated with respect and dignity, no matter what their job or lifestyle is.