Tourism is the industry in the world. a. fourth-largest b. second-largest c. largest d. third-largest

Tourism is the largest industry in the world. You have to estimate the position of the tourism on the global market and give your conclusion. At first, you have to make research and read about how this industry is popular and important for people and business and you will find out that this is an activity in which people take part widely, from all over the world, and its importance has incredibly increased over the human history. This is the main part of economical relationships.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.