Final answer:
Herding bison was noisy due to the commotion of the activity and dangerous as bison are large animals that posed a significant risk to hunters. The essential nature of bison for Native American survival and the changes brought about by European settlement activities increased the peril involved.
Step-by-step explanation:
Herding buffalo, or bison, was a noisy and dangerous activity for the Indians because it required strategic tactics that often involved great risk. Bison were abundant on the Great Plains and essential for the survival of the Native American tribes, providing them with food, clothing, and shelter.
The noise during these hunts was from the chaos caused by driving the herds towards cliffs or enclosures for capture. It was dangerous given that bison are large, powerful animals that could easily injure or kill hunters during the process. Furthermore, the introduction of horses profoundly changed hunting techniques and the need to herd bison in such perilous ways.
Development and settlement activities by European settlers, such as fencing the prairies and exterminating buffalo to clear lands for agriculture, made it even more critical and desperate for tribes to sustain their way of life through bison hunting, thus amplifying the hazards involved.