Final answer:
The highest rate of dental injuries among the given girls' high school sports options is most often associated with basketball due to its contact nature.
Step-by-step explanation:
The question focuses on dental injuries among high school sports played by girls. While the query does not provide specific data on the injury rates within each sport, it does ask for the sport with the highest rate of dental injuries among several options given. Based on the nature of each sport, basketball as a contact sport has a higher likelihood of causing dental injuries compared to the other sports listed, such as gymnastics, softball, and volleyball, which generally involve less direct contact.