Well, tourism is the largest commercial service industry in the world.
Some sources list tourism at the largest indistry in the world, but this is difficult to measure. Generally, most sources say that food is the largest industry, followed by either Tourism or oil industry or communication.
The problem with this is that it's hard to distinguish: communication and oil are also used in tourism so the same activity can be a part of more than one sector. I would say that D is the best answer, but the question should specify the source it is referring to.
When you want to compare an contrast ideas
The bill of rights and the constitution
They correct answer is C: "Natalie watches a Presidential debate with her parents in order to complete a homework assignment for school". Because Natalie has two clear objetives, to do her homework as personal and to kwow issues or characteristics of the election process as a civilian person.
One problem that blocks communication is the hierarchy within an institution. The communication is hard to disseminate below and would take the time to finally be absorbed by the working people. A decentralized communication gives faster action and results for dissemination which in effect gives member satisfaction for immediate solutions or understanding of situations.
