To determine which arrow best represents the movement of oxygen during photosynthesis, keep in mind that oxygen is produced as a byproduct of photosynthesis, which primarily occurs in the chloroplasts of plant cells.
During photosynthesis, the process involves the intake of carbon dioxide (CO2) and water (H2O), and with the help of sunlight, these are converted into glucose (C6H12O6) and oxygen (O2). The oxygen produced is then released into the atmosphere.
If the choices (A, B, C) are representing different movements, the arrow that indicates the release of oxygen into the atmosphere should be the correct choice.
Without the visual context of the arrows or their labels, I cannot specify which one (A, B, or C) represents this movement accurately. However, look for an arrow that points outward from the plant or chloroplasts, suggesting the release of oxygen.