The correct answer is A. disciplined.
A disciplined person is someone who is able to control their behavior and emotions. They are able to stay calm under pressure and make sound decisions. This is important for a General Manager, who needs to be able to handle difficult situations with the workers union.
A naive person is someone who is innocent and trusting. They may be easily fooled or taken advantage of. This is not a desirable trait for a General Manager, who needs to be able to think critically and make sound decisions.
A strict person is someone who is very demanding and expects a lot from others. They may be quick to anger and difficult to please. This is not a desirable trait for a General Manager, who needs to be able to build relationships with the workers union.
A loose person is someone who is not very organized or disciplined. They may be late for meetings or forget important deadlines. This is not a desirable trait for a General Manager, who needs to be able to manage their time effectively and meet deadlines.