Volcanoes can release an amount of matter into the atmosphere. The particles will serve as nuclei to help form the water droplets. Following an eruption is usually a heavy rainfall that will encourage plant growth.
The high buildings in NYC are highly vulnerable to hurricanes. High winds can arrive before the hurricane actually hits, and the higher you go, the earlier you feel those winds. Since the city is so big, it is also harder for so many people to evacuate from the hurricanes. NYC had 578 miles of coastline which is a lot of water around for the hurricanes to travel through.
I am pretty sure the answer is C. Depression