Final answer:
To reduce the risk of injuries in children's sports, competitors should be matched based on age and weight to minimize physical disparities that could lead to harm. . The correct answer is a) Age and weight.
Step-by-step explanation:
One way to ensure a reduced risk of injuries when children play sports is for competitors to be matched in age and weight. Matching competitors by age and weight helps ensure that they are physically similar, which can reduce the likelihood of injuries from occurring due to size or strength differences. This method of matching is particularly important in contact sports or sports that involve a physical advantage.
Additionally, ensuring that players have similar skill levels and appropriate equipment can further help reduce injury risks. This is because children who are similar in age and weight are generally at similar stages of physical development and have similar strength and coordination levels. So, the correct answer is a) Age and weight.