Final answer:
Based on the reference provided, with descriptive phrases such as playing with a handball and tying up her dress, it can be concluded that Sara plays the sport of Handball.
Step-by-step explanation:
The sport that Sara plays can be inferred from the descriptive phrases in the reference provided. The passage describes Sara as someone who engages with eleven other girls, ties up her dress, plays with a handball, gets covered in sand, and easily swings heavy weights. All of these activities suggest that the sport Sara plays is Handball. Handball is a sport that includes teams, often with seven players on each, where players use their hands to pass a ball and score goals against the opposing team. The mention of being covered with dust from the foul arena supports the high-intensity nature of handball matches, which are often played indoors on a court, leading to a dusty environment.