The correct answer is C. The evidence textual offers the information to build the main idea. It also means that they are connected but they are different. The main idea has no sense without textual evidence. So, The main idea became the main idea because of the lack of textual evidence or the lack of pieces of information for that.
The answer is the first three. The speaker has a unique imagination so the answer is going to be directed towards the speaker. The first, second, and third answer directly acknowledges how the author sees things differently than everyone else. The other or last two options say what everyone else can see and is therefor not contributing to his imagination.
Working conditions mean, the way a company or a job place their enviroment. Cleanliness, the way they treat their employees,coworkers and customers, management, etc.
The overriding idea in any piece of fiction is known as it's plot
