Which scatterplot shows a positive association between the variables

there is no picture, but it will be a graph that shows a mostly straight line going up to the right

Explanation:

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.