Question

the author includes the chart primarily to allow the reader to —
find the number of volcanic eruptions each year.
analyze volcano casualty rates by type of volcano.
analyze the frequency of volcanic eruptions by region.
compare facts and statistics about major volcanic eruptions.

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: If the chart isn't focused on yearly counts of eruptions, this is incorrect.
• Option 2: If the chart doesn't have data on casualty rates by volcano type, this is wrong.
• Option 3: If the chart isn't organized by region for eruption frequency, this is incorrect.
• Option 4: A chart about major volcanic eruptions would likely present facts and statistics to compare, making this the most logical choice.

Answer:

D. compare facts and statistics about major volcanic eruptions.