Question 3 A researcher studies children in grades Kindergarten through 6th grade, and finds a strong positive linear association between height and reading ability. Which of the following statements is the best conclusion? A The observed association was a complete coincidence. B In any grade, taller children are better readers. C Height is most likely confounded with age: In elementary school students are getting taller and improving their reading ability. D This is reverse causation: reading ability is causing the students to grow taller