The government-owned gas company has begun selling stoves and other gas appliances to create a larger market for its gas. Merchants who sell such products complain that the competition will hurt their businesses. That may well be; however, the government-owned gas company is within its rights. After all, the owner of a appliances and surely there would be nothing wrong with that.
What this question is testing
Conclusion
The author's point: it's fine for the government-owned gas company to sell appliances, even though it hurts merchants.
Evidence
The argument is by analogy: a private gas company could do the same thing without anyone objecting.
Evaluate
The argument bridges from private companies to government-owned ones. To complete that bridge, we need a principle that says: whatever a private business is allowed to do, a government-owned company is allowed to do too.
Goal
The right answer is the principle that gives government-owned companies the same rights private businesses have.
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