India's scientistsIndia's scientistscan leam aboutcan find out whathow the Redhappened to thePlanet's weatherwater that mightsystems work.have existed onMars.Which best replaces the questionmark in the box above?The spacecraft's data will helpexplain how planets form.Scientists hope to learn whatconditions make life possible.Scientists know that methane isa sign of life.The spacecraft's instrumentswill gather data.