Question

The tsunami waves were triggered by a massive earthquake
A) Off northern Sumatra
B) Off Thailand
C) Off Andamans Island
D) Off the Nicobar Island
​

Answer 1

Answer:

off northern sumatra is correct

Answer 2

Answer:

A powerful earthquake off the coast of northern Sumatra generated the tsunami waves., hence A is the answer

Explanation:

The $2004$ Indian Ocean earthquake and tsunami, recognized by the scientific community as the Boxing Day Tsunami, happened at $07:58:53$  local time ($UTC+7$ ) on $26$ December, centred off northern Sumatra, Indonesia  A rupture along the fault between the Burma Plate and the Indian Plate triggered the earthquake.

After being generated by undersea seismic activity offshore, a succession of huge tsunami waves swelled up to $30$ m ($100$ ft) high as they headed onshore.

The tsunamis destroyed communities around the Indian Ocean's surrounding shores, killing an estimated $227,898$people in $14$ nations, making it one of the worst natural catastrophes in recorded history. The direct consequences disrupted living conditions and business in coastal regions of surrounding nations.