Lenz's law in electromagnetic induction is the direct consequence of the principle of conservation of:

Explanation

Lenz's law is used to determine the direction of the induced current by a change in magnetic field. This direction of the induced current always opposes the direction of the magnetic field which produced it.Complete step by step answer:Lenz's law states that the direction of an induced current by a changing magnetic field is such that the magnetic field created by the induced current opposes that change responsible for its production. This means, a change in magnetic field (B1) produces an induced current and the induce current also generates some magnetic field (B2) which is different from the initial magnetic field (B1). Now, the generated magnetic field (B2) by the induced current opposes the initial changing magnetic field (B1). Consider a magnet and a coil, such that the magnet is approaching towards the coil. When the north pole of a magnet is moved towards a coil, the face of the coil near to the magnet behaves like a north pole and tries to repel the approaching North Pole. To do this, the coil generates an anticlockwise current in itself. Here, we can see that electrical energy is not generated just by moving the magnet towards the coil. There is an opposite for the change in flux. Hence we can say that Lenz's law is a consequence of conservation of energy. Thus, the right answer is Option A; Lenz's law is a consequence of law of conservation of energy.