The more difficult it is to enter the task environment:

The answer that best completes the statement above is this: "the easier it is to keep prices high." It is easier to keep prices high if it is hard to enter the task environment. This is due to factors which serve as barriers which makes it harder and more costly for the company. The harder the task environment is, the more things that you have to accomplish, the lesser competitors you will also have. The result for this is that keeping the prices high would be much easier to do.