You didnt put anything in that would provide background explaining what the module was talking about, but I'll do my best!
Catching a child of any age shoplifting should be taken seriously, and should be punished. Making the child return the bracelet and apologise, as well as accept any possible punishment from the store. A small grounding should be in place, or at the very least a stern talk about how it is not acceptable to act in such a manner. No public humiliation nor contact should be used, keeping the talk/punishment stern and serious should be good to teach them. As well as making sure they understand consequences with shoplifting, as it is illegal.
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One of the most common methods to date volcanic rocks uses potassium radioactive parent and argon stable daughter).
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 .