the answer is B ! have a nice day or night
One assumption of the perfectly competitive model is free entry and exit. this assumption most directly leads to the implication that positive economic profit is only possible in the short run.
Profit is the difference between the return an economic agent earns from its output and the opportunity cost of its input. It equals total revenue minus total costs (including explicit and implicit costs).
Economic profit or loss is the difference between the revenue from the sale of output and the cost and opportunity cost of all inputs used. Opportunity cost and explicit cost are subtracted from earned revenue when calculating economic profit.
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The hard problem of consciousness refers to the question regarding how physical phenomena like brain processes are related to experiential states such as mental experience which have phenomenal qualities.
Functionalism tries to explain mental states in terms of causal relations and sensory stimulations.
But philosopher David Chalmers points out that while functionalism answers the easy problem of how the brain processes information and responds to stimuli, it does not explain why physical processes are accompanied by specific mental states. For example, why does one not only recoil in response to injury but also experience pain? And why the experience of pain in particular, as opposed to say, itching?
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