Read the passage and answer the questions A and B.

One of the sources of water in our country is the rivers. Rivers are everywhere in our life, literature, economy and  culturE- But are the rivers in good shape? Unfortunately, they are not. A few are already dead and several are going  through the pangs of death. The river Buriganga is an example of a dying river. A report published in the Daily Sun  describes what has happened to the river Buriganga and why. Its water is polluted and a perpetual stench fills the air  around it. But that is not what it was like beforE- The report says that the river had a glorious past. Once, it was a tributary of the mighty Ganges and flowed into the  Bay of Bengal through the river Dhaleshwari. Gradually, it lost its link with the Ganges and got the name Buriganga.  The Mughals marvelled at the tide level of the Buriganga and founded their capital Jahangirnagar on its banks in  1610. The river supplied drinking water and supported trade and commercE- Jahangirnagar was renamed Dhaka which  grew into a heavily populated city with a chronic shortage of spacE- The city paid back the bounty of the river by sucking life out of it. According to newspaper report, Buriganga is dying  because of pollution. Huge quantities of toxic chemicals and wastes from mills and factories, hospitals and clinics and  households and other establishments are dumped into the river every day. The city of Dhaka discharges about 4500  tons of solid waste every day and most of it is directly released into the Buriganga. According to the Department of  the Environment (DoE), 20,000 tons of tannery waste, including some highly toxic materials, are released into the  river every day. Experts identified nine industrial areas in and around the capital city as the primary sources of river  pollution: Tongi, Tejgaon, Hazaribagh, Tarabo, Narayanganj, Savar, Gazipur, Dhaka Export Processing Zone and  Ghorashal.