The part of Ernest Hemingway's short story "The End of Something" that is the best example of rejection of traditional beliefs is C. when Nick says love is not fun.
The traditional belief would suggest otherwise - however, by denying the thrill of love, Nick is getting rid of this innate traditional belief. The other examples do not really show this type of rejection, they represent other things that can be found in the story.
1. Most people take a plane to Sydney from San Francisco, so they don’t know about the pollution in the ocean.
2. The work was tiring and the crew needed to take a break and relax sometimes.
3. The sun was shining and the sea was calm, so we went small boat fishing.
4. Children learn to think in teams, that when some people play in matches they work well.
5. The number of visitors of Canada’s national parks is getting lower every year.
Try starting with a simple outline to organize your thoughts so you don't get confused it may be easier to actually write the body paragraphs before any introduction or conclusion so you can correspond your thoughts in your body paragraphs with your introduction and conclusion but it depends on who you are and what you prefer
