Answer these questions: 1. Which sentence from the text BEST summarizes a main idea of the article? A) People have more ways of marking time, and they do it more precisely. B) All living things must know the time to adjust to the world as it changes. C) Ancient people spent most of their time outside. D) Early calendars were based on the Earth's orbit around the Sun. 2. What is the MAIN idea of the section "Keeping time in agrarian societies"? A) Farming societies appeared about 11,000 years ago. B) Farming societies needed a way to agree on market days. C) Farming societies used different natural elements to tell time. D) Farming societies built Stonehenge to track the Moon. 3. Which of the following answers BEST describes the organization of the article? A) It is a comparison of different items. B) It is in order of different time periods. C) It has different causes and their effects. D) It has different questions and their answers.