The correct options are
B It does not have a proper drainage system.
C The officials of the Municipal corporation consider slums as illegal settlements.
D The slum does not have an electricity connection or safe drinking water supply.
The Urban slums do not have an electricity connection or safe drinking water supply. Moreover, it does not have a proper drainage system. It emits a foul smell and breeds mosquitoes and flies. The officials of the Municipal corporation consider slums as illegal settlements. They do not have the right to vote and hence cannot participate in the democratic process in the city.