Nationalism is something national which means in a country
This news story is completely accurate. Hollywood is an industry that produces world-famous movies, and in that industry the place of each worker is well known. In some cases, even directors have less power than producers. Producers are the ones who order how the movie will be shot, how much money will be invested, etc. Based on this, a script is being worked out or a literary work is being processed. Then, as in any industry or company, the director who will be the executor of the works will be chosen, according to producers' ideas. Of course, one fine should be kept in mind, not all the directors have the same credibility and rank, but the producers know perfectly well how to achieve what they want. It's the same with the actors, the older and credible ones have a certain status, but the younger ones can be forced to do anything if they want to build a reputation.
An unlimited amount means that there would always be more of it: so they can't run out of it, there will always be more! and since they can't run out of it, they don't have to worry or make choices - they can just use it without any limits and thinking about it.
So the correct answer is
a. have to place limits on its use.
