The correct answer is (c) Xenoestrogen
The explanation is: Xenoestrogen is a hormone that have similar functions to natural endogenic estrogen produced by the body of an organism but are chemically different and synthetically administered, Gypsum is the by product of the certain acids like Citric acid, Oxalic acid which are released from manufacturing industries, whereas, the byproduct I.e. gypsum is used fro sodic soil reclamation.