Final answer:
Yes, the factory worker's torn-off nail is likely to regrow provided the nail matrix is not severely damaged, as the human body has the ability to heal such injuries. The regeneration process may take several months and requires proper care.
Step-by-step explanation:
The question of whether a factory worker's torn-off nail will grow back after an accident pertains to human body regeneration capabilities. The human body has a remarkable ability to heal and repair itself. Nails are no exception to this, as they are continually growing tissues. The growth of nails occurs at the nail matrix, the tissue under the skin at the nail's base. Provided the nail matrix is not severely damaged, the nail is likely to regrow. It can, however, take several months for a nail to grow back completely. During this regeneration process, taking care to prevent infection and further injury is imperative for proper healing.