Passage Summary: You can only call waste recycling a 'good' idea if it's safe and doesn't waste gas. Since small farms are safe and efficient, recycling must be a good idea for them.

Conclusion: Returning organic waste is a good solution for small-scale organic farms.

Reasoning: A solution is only good if it's nontoxic and energy-efficient; small-scale farming meets both these criteria.

Analysis: This is a classic 'Mistaken Reversal' of a necessary condition. The author lists requirements for a solution to be 'good,' then assumes that meeting those requirements is enough to guarantee the solution is 'good.' In formal logic, just because you've met the prerequisites doesn't mean you've achieved the result. Look for an answer choice that says 'X is only true if Y and Z happen,' then concludes 'Y and Z happened, so X must be true.'