Answer:
Therefore, I would state it as the main idea of reading and assignment is focus and attention
Explanation:
People [students] are the best people to help us keep are family out from poorness, middle class life into a higher class life, You cannot understand what you are reading without your focus in what you are reading, Then, you can't do your assignment if you just cannot give attention to what you are doing.
The answer to your question is D).
Scientists can't be sure about the early atmosphere and can only draw evidence from other sources. For example, volcanoes release high quantities of carbon dioxide. Iron-based compounds are present in very old rocks that could only have formed if there was little or no oxygen at the time.
