Which statement best describes the process of chemiosmosis and the direct result of its occurrence

The statement that best describes the process of chemiosmosis and the direct result of its occurrence is :Hydrogen ions flow from the thylakoid down a concentration gradient through ATP synthase channels into the stroma. ADP is converted to ATP.
so the answer would beHydrogen ions flow from the thylakoid down a concentration gradient through ATP synthase channels into the stroma. ADP is converted to ATP. 

The correct answer is c.