Answer: Positive externality
Explanation: Positive externality is the concept in which the service produced and the consumption of that service will provide benefit a third party who is not a part of the process.
While producing fertilizer , it is providing a unintentional benefit to the community surrounding(third party) by keeping the insects away through exerting gases so that they don't cause insect bites or other problem.
Other options are incorrect because negative externalities are negative consequences face by the third party in a process. Comparative externality is related with comparison and pecuniary externality is increment or decrement in market price of service by action of economic actor .
The correct answer is B.
This river is also called the Chang Jiang or Long River
The Social Security Administration (SSA)
<span>A British soldier might probably say that they were more experienced in the field than Colonists and that they had more mercenaries, too. They hired professional soldiers that is why, they formed a very powerful army. However, their disadvantage was that the Colonists were hostiles and knew the land which they did not. <span>
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