Answer: It can be inferred that because Julie was off work for twelve days, in this scenario, the form she should fill is: "over 3 days injuries accident form" (Option C)
What is an inference?
When a person makes a conclusion from a passage or information, after rationalizing same, they are said to have made an inference.
Hence, although she was at home for 12 days, it can be inferred that the best form to pick is the over 12 days injuries accident form.
I hope this helps