Correct Option (2)
The passage primarily elucidates the inherent inefficiency in the conversion of plant-based foodstuffs, such as grains and legumes, into animal products for human consumption. It quantifies this inefficiency by stating that only 16% of calories fed to chickens are recovered, and this rate further diminishes to 5-7% for large animals. This central argument highlights that animal-based food production and utilization are considerably less efficient compared to the direct consumption of plant-based sources.
Incorrect Options:
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Option 1: This statement suggests an urgent need for a public policy to promote cereal-based foods. While the passage details the inefficiency associated with increased animal product consumption in wealthier societies, it does not explicitly advocate for a specific public policy intervention or dietary promotion. Its focus remains on the observed inefficiency rather than prescribing policy solutions.
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Option 3: This option proposes that plant-based protein should replace animal-based protein in daily diets. The passage critiques the efficiency of food conversion and utilization patterns, particularly in the context of increasing wealth and animal product consumption. However, it does not make a direct dietary recommendation or advocate for a complete substitution of protein sources. The scope is limited to the efficiency of resource allocation.
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Option 4: This statement asserts that inequality in food production and consumption is inevitable in any fast-changing society. The passage notes the existence of inequality in population growth patterns and its impact on food systems. However, it does not draw a conclusion about the inevitability of such inequality or offer broad sociological generalizations regarding fast-changing societies. The core argument centers on the efficiency of food conversion and utilization.