In 2000, а study wаs cоnducted оn 4000 Swedish 15-yeаr-оld males. The boys were surveyed and asked, among other things, how often they consume fish each week. Three years later, these answers were linked to the boys' scores as 18-year-olds on an intelligence test. The study found that boys who consume fish at least once a week scored higher on the intelligence test. What is the explanatory variable? (Type this in Blank #1.) What is the response variable? (Type this in the Blank #2.)