Answer:
The answer to your question is D) Chemical refining of petroleum
Standardization does ensure the quality of a commodity, yet there are many goods available in the market without Indian Standards Institute (ISI) or AGMARK certification due to it not being a requirement for all commodities on the market. Also, many smaller products cannot afford the extensive and expensive ISI/AGMARK certification process.
Answer:
D. Do a search to see if multiple outlets you trust are also covering the same story