Read the sentences from the "Ellis Island Oral History Project" excerpt. But there was one little girl that I'll never forget and when it was recess time I didn't know why everybody got up and went out of the classroom. But this one little girl came and put her arm around my shoulder, didn't say anything, she just took me outside, stayed with me during recess, and when recess was over she brought me back to my seat in school. And then, that girl, I'll never forget her. But, uh, it was very hard not knowing the language and getting started in school.

What one word could describe the central idea of the sentences?

worry
enjoyment
friendship
fear