In recent years, with the advent of technology everywhere, awareness about the harmful effects of chemical fertilizers and pesticides on the health of consumer is on rise. The conventional method of agriculture heavily rely on these chemical based fertilizers and pesticides, which after entering the food supply harm living organisms. Continuous efforts on the evolving technologies have to be made so that the toxic substances don’t penetrate the food chain and harm the eco-system. One such method is Organic farming. It is eco friendly and is more profitable to the farmers as increasing worldwide demand is witnessed. In short, organic agriculture is a whole comprehensive system which promotes an ecological balance.

Which of the following is a strategy to acheive "Sustainable development"?

Use of bio-pest

The correct option is Option 3: Use of bio-pest

Explanation:

• Use of conventional sources of energy: This is not considered a strategy for sustainable development as it often involves the use of non-renewable resources that can contribute to environmental degradation.
• Using dung cake, wood for the purpose of fuel: This is a less sustainable practice due to potential issues like deforestation, pollution and inefficient energy use.
• Use of bio-pest: This is a strategy for sustainable development as it reduces reliance on chemical pesticides, promoting ecological balance and reducing environmental harm. Bio-pest are certain types of pesticides which are derived natural materials such as animals, plants, bacteria, and certain minerals. They have lesser risk than conventional chemicals. Very small quantities can be effective and they tend to break down more quickly, which means less pollution.

So, use of bio-pest is a strategy aligned with sustainable development.