Which of the following was the first type of jazz to develop?
a] hot jazz
b] free jazz
c] cool jazz
d] classic jazz

(A) Hot jazz

Explanation:

 The hot jazz is known as the early jazz as it was one of the first type of jazz which is developed at the earlier stage. Hot jazz is similar to the ragtime music and it is the fast version of the jazz.

The hot jazz is the type of jazz which is emotionally charged and strongly impact the rhythms. It is firstly early developed in the jazz form. It basically demonstrate the passion and the fast pace in the form of jazz style.

Therefore, Option (A) is correct.