The solution to any environmental problem that is not the result of government mismanagement can only lie in major changes in consumer habits. But major changes in consumer habits will occur only if such changes are economically enticing. As a result, few serious ecological problems will be solved unless the solutions are made economically enticing. The conclusion drawn in the argument above follows logically if which one of the following is assumed? ['Major changes in consumer habits can be made economically enticing.', 'Few serious ecological problems are the result of government mismanagement.', 'Few serious ecological problems can be solved by major changes in consumer habits.', 'Most environmental problems that are not the result of government mismanagement are major ecological problems.']