Answer is D:
(4) The enactment of regulation X did not provide the Friendly chain’s competitors with an advantage they did not previously have; other dramatic changes in other market forces caused the decline in the Friendly chain’s market share.
If this is negated, then this contradicts the argument. enactment of X did tip the market in favour of competitors.
(4) The enactment of regulation X did not provide the Friendly chain’s competitors with an advantage they did not previously have; other dramatic changes in other market forces caused the decline in the Friendly chain’s market share.
If this is negated, then this contradicts the argument. enactment of X did tip the market in favour of competitors.
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