Correct choice is (a) Product recovery
The explanation: Downstream Processing includes the recovery of the products in a pure state and the effluent treatment. Product recovery is carried out through a series of operations including cell separation by settling, centrifugation or filtration; product recovery by disruption of cells (if the product is produced intracellularly); extraction and purification of the product. Finally, the effluents are treated by chemical, physical or biological methods.
