Which of the following takes place inside both mitochondria and chloroplasts?
a. the flow of hydrogen ions is used to make atp.
b. the calvin cycle builds sugar molecules.
c. the krebs cycle breaks down carbon-based molecules.
d. light energy from the sun is captured and used to make atp.

Answer is A
Explanation:
Calvin Cycle is the second phase of photosynthesis which occurs only in chloroplast.
Krebs Cycle is the second phase of Oxidation of Glucose which occurs in the mitochondria.
Mitochondria doesn’t need light energy Ito synthesize ATP, but rather energy obtained from oxidation.

Yes because i am a god