Final answer:
Purchasing organic foods promotes environmental protection by decreasing d) the use of toxic pesticides, preserving genetic diversity of crops, preventing soil erosion, and supporting water conservation efforts.
Step-by-step explanation:
Purchasing organic foods helps in encouraging a reduction in the use of toxic and persistent pesticides. Organic farming promotes an ecological production management system that enhances biodiversity, biological cycles, and soil biological activity. It benefits the environment by preserving the diversity and health of soil ecosystems that are crucial for sustainable agriculture.
Organic practices also help in preserving genetic diversity of crops and soil erosion prevention due to lower reliance on harmful chemical inputs that can degrade soil structure. Moreover, the organic movement promotes water conservation efforts indirectly by maintaining soil health, which improves water retention and reduces the need for irrigation. Therefore, organic farming leads to significant environmental benefits.