The correct option is D inefficient management of solid, liquid and gaseous waste
Pollution to air, water, and the land is caused basically because of poor and ineffective management of waste solid, liquid and gas. Solid waste is not filtered at source and it degrades the quality of land and fills water bodies with filth, liquid waste is not treated before leaving it in the environment, it pollutes water bodies, land and causes air pollution due to contamination. Gaseous substances are least checked before they are released into an atmosphere which remains the major reason for air pollution.