One active transport process that occurs in the electron transport process in the membrane of the is the transport of protons to produce a proton gradient to power the production of atp. a. chloroplast b. mitochondria c. nucleus and) ribosome

The correct option is MITOCHONDRIA.
Active transport is a type of transport through which materials are move in and out of the cell using the energy derived from ATP. The electron transport process is a series of biochemical reactions which result in the formation of ATP molecules inside the cell. The process usually takes place in the mitochondria of the cell. 

Your answer is b. codominant