What is the impact of external factors such as seasonality on supply levels of agricultural products?

The correct answer is that supply fluctuates due to external factors such as seasonality affecting agricultural products. Agricultural production is highly sensitive to seasonal changes, as different crops have specific growing seasons that dictate when they can be harvested. For instance, certain fruits and vegetables are only available during specific months of the year, leading to variations in supply as the seasons change.

As conditions such as climate, weather patterns, and seasonal demand shift, they cause the supply of these products to rise or fall at different times. This fluctuation can be influenced by factors such as droughts or excess rain, which can diminish crop yields in a given season, or conversely, favorable weather conditions can lead to a bumper harvest.

In summary, the nature of agricultural production means that supply is not static but rather dynamic, responding to the variability of external conditions presented by seasonality.