To accurately determine which arrow represents the movement of atmospheric oxygen (O2) during respiration, I would need to see the specific diagram or context you are referring to, as there’s no visual context provided in your question.
In general terms, during respiration, oxygen is inhaled from the atmosphere into the lungs (often represented as an arrow pointing from the atmosphere to the lungs). The oxygen then enters the bloodstream and is transported to cells throughout the body, where it is utilized in cellular respiration to produce energy, leading to the production of carbon dioxide (CO2) as a waste product.
If you could describe the arrows or provide more context regarding what each arrow represents, I would be happy to help you determine the correct answer!