Answer:
Bipolar disorder is a long-term mental illness that can affect the lives of everyday people and their families. Bipolar disorder is seen by intermittent episodes of mania and depression. Symptoms of mania include increased energy, restlessness, and feelings of euphoria. Meanwhile, states of mania are often characterized by impulsivity, recklessness, social intrusiveness, and diminished need for sleep. All of these can lead to patients inflicting harm on themselves and sometimes others.
The correct answer is C, to help her remember their friendship.
Answer is in a photo. I can only upload it to a file hosting service. link below!

1c
2b
3b
4b
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Personally, I believe that the answer is C.
Hundreds of new words are added to the dictionary each year, and some of these do not have origins within the English language- therefore, other cultures and countries will have adopted these from their original language.
Hope this helps :)