Correct Option (B)
Assumption 2 is correct. The passage describes botanical pesticides as a "practical sustainable alternative" that contributes to "reduction of environmental contamination and human health hazards." Sustainable agriculture, by definition, aims to integrate practices that are environmentally sound, economically viable, and socially responsible, which includes minimizing ecological imbalance and environmental harm. The passage's emphasis on the benefits of botanical pesticides aligns directly with this objective.
Incorrect Options:
Assumption 1 is incorrect. While the passage extensively details the inherent toxicities, persistence, and adverse effects of synthetic pesticides on health and the environment, it does not state or imply that they should be entirely prohibited from modern agriculture. The text advocates for safer alternatives and highlights the problems associated with their indiscriminate use, rather than calling for their complete cessation.
Assumption 3 is incorrect. The passage highlights that botanical pesticides are "safer to the user and the environment" and are biodegradable, breaking down into harmless compounds. It focuses on their environmental and health benefits, as well as their role in maintaining biodiversity. However, the passage does not provide any information or comparative analysis regarding the efficacy or pest-killing power of botanical pesticides relative to synthetic pesticides. Therefore, an assumption about their superior effectiveness cannot be drawn from the given text.