The correct option is (a) True
Easy explanation: The water which seeps deep down to the ground gets collected at some point and forms under water table. Due to some reasons the level of this table gets raised up to the top soil level. Here further water cannot seep down and it gets stagnated on the top surfaces of the soil. This stagnation of water due to the rise of water table is called waterlogging. Therefore we can say that the waterlogging is the rise of the water table.