B. Heavy consumption of omega-3 fatty acid frequently results in symptoms, such as headaches, and even joint pain.
B is wrong because of the wordheavy . Author's conclusion is "fish consumption in Colton is very low and there are many advantages of eating fish, specially O3. So, Colton's policy-makers should encourage people to eat more fish". This option can be considered as a fact or a warning sort of but doesn't weaken the conclusion at all. Had this sentence written as "consumption
...
B is wrong because of the wordheavy . Author's conclusion is "fish consumption in Colton is very low and there are many advantages of eating fish, specially O3. So, Colton's policy-makers should encourage people to eat more fish". This option can be considered as a fact or a warning sort of but doesn't weaken the conclusion at all. Had this sentence written as "consumption
...
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