Arianna's behavior was cryptic to say the least. The momentary bursts of laughter between her tears completely baffled us. Arianna, the peer advocate, had never been so out of touch with herself. As her best friend, I tried hard to lift her spirit. However, the grimace in her face at my every attempt to do so discouraged me. Arianna did not want to watch a movie, enjoy ice cream, or go for a walk. I could not watch Arianna sit frozen on her couch anymore, and I needed help rolling her out from the inertia. So I convinced the school counselor to pay Arianna a visit.
Which word or phrase in the paragraph helps the reader understand the meaning of the word grimace?
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attempt
advocate
discouraged
momentary