Final answer:
The supine position is the most suitable position for safety and comfort for varicose veins.
Step-by-step explanation:
The position that can ensure safety and comfort for varicose veins is C) Supine position. When a person is in the supine position, lying on their back with their upper limbs and lower limbs touching the sides, it helps promote blood flow and reduce pressure on the veins.
This position allows gravity to assist in venous return, which can be beneficial for individuals with varicose veins. By keeping the legs elevated in a supine position, it helps reduce swelling and discomfort in the veins.
Other positions mentioned such as Sims' position, High Fowler's position, and Left lateral position are not specifically designed for varicose vein comfort and safety.