Answer:
The answer is DECEMBER 15
Step-by-step explanation:
In 2011, Tropical Storm Sendong (Washi) was the country's 21st tropical cyclone. It is also regarded as the year's most powerful. On December 13, 2011, it developed in the Pacific Ocean, some 945 kilometers southeast of Guam, and on December 15, it reached the Philippine Area of Responsibility (PAR).
