Answer: c. Treat the girl to the best of your ability.
Step-by-step explanation:
The first action will be to treat the girl to the best of ones ability. Since the girl is in pain and her right wrist is noticeably deformed, and she has some blood seeping from scrapes on her right arm and right leg, the girl should be assessed and attended to.
She needs urgent attention first and that should be the first thing. After she's been treated and her sound cleaned up, then the parents can be looked for.