The reason why Son Doong Cave was formed is that ………..

Read the passage, and choose the correct answer A, B, C or D for each question

Mumbai, which is located in the western coast of India, is the capital of Maharashtra state. It is home to Bollywood, the centre of Hindu movie industry, and the film “Slumdog Millionaire” was based there. Poor people have to live in slums. In the slum, people have to live with many problems. People have to go to the toilets in the streets and there are open sewers. Children play among sewage wastes and doctors deal with 4,000 cases of death a day because of lack of hygiene.

Next to the open sewers are water pipes which can crack and take in sewage. Dharavi slum is based around this area. There are toxic wastes in the slum including hugely dangerous heavy metals. Dharavi is made of 12 different neighbourhoods and there are no maps or road signs. The further you walk into Dharavi from the edge, the more crowded area becomes. People live in very small slums, often with many members of their extended families.

Where are the toilets in the slum?

• A. The toilets are in the streets.
• B. The toilets are in the shops.
• C. There are no toilets.
• D. The toilets are in the trees.