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Reshma gupta Best Answer
in this question you can see that it is talking about open resource. open resource means a resource for everyone. so it would have a externality it can be positive or negative and also free for everyone. so we can neglect 1,2 and 4 answers directly. because it is not due to lack of anything but it is a property of open resources. market failure occurs when property rights are not well defined and there is no record of costs and benefit . so answer should be market failure and propert rights.