The argument presented by salt producers against the consumer groups' research is based on:
A. Health benefits of other minerals in unprocessed salt, absent in refined salt.
B. The research being biased against the salt producers' claim about natural salt being healthier than table salt.
C. The taste of food improving through the use of mineral salts.
D. The claim that some salts are less natural and contain essential minerals.
Explanation: শেষ paragraph এর শেষের দুটি লাইনে পরিষ্কারভাবে producer দের এই যুক্তির কথা বলা আছে: producers claim the mineral salts contain essential minerals and provide health benefits which are absent in refined salt.
