Based on your description of the painting "Regatta on the Grand Canal in Honor of Frederick IV, King of Denmark," by Luca Carlevarijis, it seems that the artwork includes elements such as perspective and movement due to the depiction of boats and people, which suggest action and depth. However, without seeing the image, it's challenging to determine the presence of variety specifically.
If you need to choose an element that might be missing, it would likely be variety, as it can sometimes be less prominent depending on the composition. Therefore, the correct response would be variety.