PT 28 S4 Q6

Long after the lava has cooled, the effects of a major volcanic eruption ... ...

Which one of the following most accurately expresses the main idea of the passage?
(A) The effect of volcanic eruptions on regional temperature is greater than it was once thought to be.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: Science & Technology Mix 3