[NEET 2016, Phase II]
Correct Option (d)
Reason : Downstream process is the process of separation and purification of products synthesised in bioreactors. After the completion of biosynthetic stage, the product has to be subjected through a series of processes before it is ready for marketing as a finished product.
The processes include separation and purification, collectively referred to as downstream processing. The product is then formulated with suitable preservatives. Hence, option (d) is incorrect and all other options are correct.