Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: dou was sick for 2 days . the night b4 , she woke up with a low grade fever of about 37.7 degree . so as usual , the daddy pasted a fever patch on her tiny forehead .

Question: What caused Dou 's father to apply a fever patch to her forehead ?
The girl is sick , and this may help treat the symptoms of the illness
Her low grade fever.