Hardin's "tragedy of the commons" is a particularly instructive example of how people manage common resources. what are the defining characteristics of common pool resources? select one:

(a) a common pool resource is managed efficiently by large groups of people or firms
(b) non-excludability and subtractability
(c) accountability and monitoring
(d) common use and privatization

Option B

Explanation: As per the "tragedy of commons" , individuals often exploit the common resources as per their own will and degrades the resources for the common benefit of the society.

As per this theory, the resources for use share a common pool and are interdependent, therefore, no part of the pool could be excluded as it will affect all other resources.

Hence from the above we can conclude that the correct option is B.

they work in some type of way

of the three mortgage options that demarco and tanya have to choose from, the balloon payment mortgage would be their best option, over adjustable payment and fixed payment plans.ultimately, the balloon payment plan would save demarco and tanya overall, in interest, would cost less monthly, and they would only have to make these payments for 8 years, opposing to 30 years for adjustable or fixed payment plans. 

overall, demarco and tanya would save $80,811 if they chose balloon payments over fixed payments, and would save $116,711 if they choose balloon payments over adjustable payments. benefits with choosing fixed payments over adjustable payments is that, in the end, the payments will still be $836.30 a month, while with adjustable payments, the initial monthly payments will be $763.38 to $1082.70 a month, ultimately leading to a more costly purchase. benefits with choosing fixed payments over balloon payments are not present. benefits in choosing adjustable payments over is that it has a lower interest rate, and starts with lower monthly payments initially. benefits in choosing adjustable payments over balloon payments include a lower interest rate, and lower initial monthly payments. benefits in choosing balloon payments over fixed payments include lower interest rates, lower overall price, lower monthly payments, takes less time to pay off, and does not require a downpayment. benefits in choosing balloon payments over adjustable payments include, lower monthly payments (when averaged), takes less time to pay off, and lower overall price.

hence, option c, balloon payments, is the best option for demarco and tanya to make this purchase, for it will save them a minimum of $80811, and a maximum of $116,711.