Final answer:
Regulatory T cells control or limit the immune response to protect the host's own tissues against autoimmune response.
Step-by-step explanation:
The T cells that control or limit the immune response to protect the host's own tissues against autoimmune response are Regulatory T cells (c). Regulatory T cells are responsible for suppressing T cells that mistakenly react against self antigens. If these T cells were not suppressed, the immune system would attack the host's own tissues, leading to autoimmune diseases.