Which hormone promotes cell division, protein synthesis and bone growth?

Options

A. PTH
B. ACTH
C. ADH
D. GH

Explanation

### Step-by-Step Solution:

1. **Identify the Functions**: The question asks for a hormone that promotes cell division, protein synthesis, and bone growth. These functions are all related to growth and development in the body.

2. **Connect Functions to Growth**: Recognize that cell division, protein synthesis, and bone growth are essential processes that contribute to overall growth in an organism.

3. **Recall Relevant Hormones**: Consider hormones that are known to be involved in growth processes. The most notable hormone that fits this description is the growth hormone.

4. **Name the Hormone**: The hormone that promotes cell division, protein synthesis, and bone growth is known as the growth hormone, abbreviated as GH.

5. **Source of the Hormone**: Growth hormone is secreted by the anterior pituitary gland, which is responsible for regulating various bodily functions, including growth.

6. **Final Answer**: Therefore, the hormone that promotes cell division, protein synthesis, and bone growth is the growth hormone (GH).