The answer is D. You are welcome.
The oxygen produced by the chloroplasts passes out the cell by Cellular Respiration. So the answer would be D :)
<span>Stomach. Stomach which connects oesophagus to small intestine is the main part of digestive system where digestion occurs. Protein is a necessary food content for the healthy being of body. From the food proteins are liberated and its chemical digestion starts in the stomach.</span>