That is practically impossible to say that so the answer is false
Answer:
there should be a comma after vacation
<span>In the Odyssey by Homer, the main idea would be a life's journey that is filled with obstacles. Odysseus has been at war for ten years and now he has spent ten years trying to get home. The journey has been long and full of trials, tribulations and obstacles</span>
The correct answer of the given question above would be the third option. What the main idea does not do is to show what a reader will learn, rather, it only shows what the story is about, summarizes the details and events, and illustrates an important idea. Hope this answers your question.