Question

in 2011, typhoon nesat struck the philippines and caused widespred flooding. after hitting the philippines, typhoon nesat was predicted to hit the large city of hanoi, vietnam.
predicted path of typhoon nesat
if typhoon nesat had continued along the same path, which development would most likely have reduced its stregth before it hit hanoi?
warm water moving into the sea east of hanoi
cool water moving into the sea east of hanoi
the formation of a low - pressure area south of bangkok
the formation of a high - pressure area south of bangkok

Explanation:

Typhoons gain strength from warm water. Cold water would reduce its strength. Warm water moving into the sea east of Hanoi would likely increase its strength. Formation of a low - pressure area south of Bangkok is not relevant to the typhoon's strength reduction. Formation of a high - pressure area south of Bangkok is also not directly related to reducing the typhoon's strength. Cold water moving into the sea east of Hanoi would take away the heat source (warm water) that typhoons need to maintain and strengthen, thus reducing its strength.

Answer:

Cold water moving into the sea east of Hanoi.