Martin is interested in the new hypermiling movement which focuses on getting the best miles per gallon (mpg) when driving. he gathered some data about the weights, in thousands of pounds, of different cars and their average mpg. the graph below shows the results of martin's research.

select the true statement based on the graph.

a.
the situation shows correlation without causation.
b.
the situation shows neither correlation nor causation.
c.
there is not enough information.
d.
the situation shows correlation with causation.