Final answer:
A healthy hoof grows approximately 1/4 inch per month, which is the rate at which healthy hooves generally grow under normal conditions.
Step-by-step explanation:
The correct answer to the question of how much a healthy hoof will grow in a month is option b) 1/4 inch. This rate of growth is for a healthy hoof under normal conditions.
Just as with humans, where hair grows at different rates on various parts of the body, hoof growth can vary based on the health of the animal, the environment, and their nutrition.
For comparison, human hair grows at about half an inch each month on the scalp. Hoof care is essential for animals, particularly for horses, as it can impact their overall health and ability to move freely.