Section: Evidence-Based Reading

99) View Additional Information

The author of passage one would most likely respond to the monitoring of volcanic gases described in passage two by

1. Respecting the effort and encouraging technological research and advancement
2. Warning the author that he's on the wrong path
3. Questioning the logic by which monitoring of gases works
4. Worrying that monitoring gases will not provide enough protection

Answer 1: this choice is the only one that respects the complementary relationships of the two passages. One is an overview and another hones in on one aspect of that passage mentioned -- the dangers of volcanoes and what to do about them.