The correct answer is: a) Balance power supply and demand.
Load shedding is a measure used to balance power supply and demand. It is done by temporarily disconnecting some consumers from the power grid. This is done to prevent blackouts, which can occur when there is too much demand for electricity and not enough supply. Load shedding can also be used to promote energy conservation. When consumers are aware that they may be disconnected from the power grid, they are more likely to conserve energy.
Option b) is incorrect because load shedding is not used to prevent blackouts. Blackouts occur when there is too much demand for electricity and not enough supply. Load shedding is used to balance power supply and demand, which can help to prevent blackouts.
Option c) is incorrect because load shedding is not used to increase revenue for KSEB. KSEB is the Kerala State Electricity Board. Load shedding is a measure that is used to balance power supply and demand, not to increase revenue.
Option d) is incorrect because load shedding is not used to promote energy conservation. Load shedding can be used to promote energy conservation, but it is not the primary purpose of load shedding.