Where are most tropical cyclones born in the southwestern part of the North Pacific?

Tropical cyclones in the southwestern part of the North Pacific typically form over warm ocean waters, where conditions are conducive to the development of these intense storms. The Marshall Islands and the Philippines are located in regions of the Pacific that experience not only warm sea surface temperatures but also prevailing wind patterns that favor cyclone formation. The geography and atmospheric conditions in these areas provide the necessary ingredients for cyclones to develop and intensify.

Hawaii and the Galapagos Islands, while both located in the Pacific Ocean, are either too far north or do not have the same conducive environment for the birth of tropical cyclones as the waters surrounding the Marshall Islands and the Philippines. The Bahamas, located in the Atlantic, is outside the relevant region for this question. Therefore, the choice highlighting the Marshall Islands and the Philippines correctly identifies the typical birthplace of most tropical cyclones in the southwestern North Pacific.