Final answer:
SWD heats tissues to a greater temperature than ReBound diathermy because microwaves penetrate deeper into the tissue, providing more effective deep heating for pain and injury treatment.
Step-by-step explanation:
The primary reason why Short Wave Diathermy (SWD) heats tissues to a greater temperature than the cable/sleeve (ReBound) diathermy is because microwaves used in SWD can penetrate deeper into tissues. This allows for deep heating, which is effective for treating muscular pains, spasms, tendonitis, and rheumatoid arthritis. Unlike SWD, the ReBound system relies on a different mechanism that does not achieve the same level of deep tissue heating as microwaves. Therefore, the correct answer is not provided explicitly among the given options, so the most accurate choice would be (d) None of the above.