Option 1 states that brain cells have the least regenerative power. Brain cells, also known as neurons, are responsible for transmitting signals in the brain and central nervous system. Unlike other cells in the body, brain cells have limited ability to regenerate. When brain cells are damaged or die, they cannot be replaced, resulting in permanent loss of function.

Option 2 suggests that muscle cells have the least regenerative power. Muscle cells, also known as myocytes, have the ability to regenerate to a certain extent. When muscle cells are injured, they can repair themselves by building new muscle fibers. However, this regenerative capacity is not as limited as brain cells, as muscle cells can only regenerate to a certain extent before scar tissue forms, which can impact muscle function.

Option 3 states that bone cells have the least regenerative power. This statement is incorrect. Bone cells, known as osteoblasts and osteoclasts, have the ability to regenerate and repair themselves. When bone is fractured or damaged, bone cells work together to rebuild and remodel the bone tissue, allowing it to heal.

Option 4 claims that liver cells have the least regenerative power. Liver cells, also known as hepatocytes, have remarkable regenerative abilities. When a portion of the liver