Answer:
All of the above
Explanation:
Every option here can be seen as a distraction while taking photographs at a zoo. Fences can often affect focus or leave lines on your final product. Enclosure glass often is covered in scratches or has smears, causing a blurry or disturbed image. Other people can be inconsiderate, getting themselves infront of you or often young kids running all over, bumping into you or running into your shot.
