Answer:
Hope this helps ^^
Step-by-step explanation:
The correct answer is C: Option 3. The thymus gland produces a hormone that is important in the differentiation of T cells, which are a type of immune cell involved in the body's immune response. The differentiation of T cells is crucial for the proper functioning of the immune system. None of the provided options (glial cells, dermal cells, or muscle cells) are directly associated with the role of the thymus gland hormone.