So-called “engineered foods,” usually in powder or liquid form, consist of protein that is distilled from natural sources and supplemented with vitamins and minerals. Although the amino acids contained in such products stimulate the production of growth hormones, these hormones produce growth in connective tissue rather than in muscle mass; this to improve their muscular strength, should not consume engineered foods.
What this question is testing
Your task
Find the assumption the argument requires in order for its conclusion to hold.
Common trap
Answers that would help the argument but aren't strictly required (sufficient, not necessary).
Winning move
Negate each choice — the right one breaks the argument when negated.
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