Workers in deep mines usually suffer from dehydration because (a) water is lost due to evaporation (b) water is lost due to defecation (c) water is lost in the form of urine (d) water is lost along with salts in the form of sweat.
Option D. Mine workers work in deep underground mines where air ventilation and temperature control is difficult to maintain. Working in hot conditions can lead to heavy loss of body fluids and salts through sweat. Wherever humidity is really high, the hazard is increased as more heat strain is placed on the worker. If the thermo-regulatory control of the body is lost and the core temperature begins to rise, then the workers may start suffering from heat illness
