Please read article and answer questions attached

\fRead the article \"Creeper Jeepers Peepers.\" Answer the following questions. 1} [s the stud}.r referred to in the article an observational study or an experiment '? Explain. 2} 1|What is the ex'pnlariatulzrrjl.r variable? How did the researchers measure the explanatory variable? 3} Identify.r the response variables. 4]: According to the article, why are people who 1wear reusable lenses at a greater risk of developing acanthainoeba lr.eratitis':'-'I