Select the most appropriate option to fill in blank number 1.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1, i.e. “natural.”
Earthquakes are categorized as natural disasters, not artificial or man-made. This classification is confirmed by authoritative sources such as FEMA and NIH, which list earthquakes among natural hazards or natural disasters alongside floods, hurricanes, and volcanic eruptions.
The other options ('artificial,' 'unnatural,' 'unrealistic') do not apply to earthquakes, as they are naturally occurring geological events.