Final answer:
According to the pediatric Rule of Nines, the child's anterior torso represents 9% of their total body surface area (TBSA).
Step-by-step explanation:
The correct answer is a) 9%. According to the pediatric Rule of Nines, the child's anterior torso represents 9% of their total body surface area (TBSA). The Rule of Nines is a method used to estimate the extent of burns on a child's body. It divides the body into different regions, assigning a percentage value to each region based on the proportionate area it represents.