Fusion occurs in the of the sun, where the pressure and temperature are very high.
a. chromosphere
b. photosphere
c. solar wind
d. core

Fusion occurs in the D. core of the Sun, where the pressure and temperature are very high. 
This process happens in the very center of this star, which is known as the place where the temperature is the highest. 

Ifound this on google “your outer ear collects sound waves and reflects them into a tiny tube called the ear canal. at the end of the ear canal is a thin, skin-like membrane stretched tightly over the opening, called the eardrum.” i hope this you for what your looking for