Amaritime tropical air mass has which type of air?

a.
warm and moist

b.
warm and dry

c.
cold and dry

d.
cold and moist

A. Warm and moist and humid climates can be found in a maritime tropical air mass. 

The warmth causes the water molecules to rise and cause the air to be humid and moist. 
It is warm because maritime places are next to the sea and that causes the air in the land surrounding it to be warm because of the winds that travel across the sea are warm.

Hope this helps :)