Identify the Oxymoron

Read the following sentences and identify which option contains an oxymoron:

1. She found a new beginning in the chaos of her life.

2. The icy hot sensation made him question his feelings.

3. Despite his evident happiness, there was a lingering sadness behind his smile.

4. In the silence of the night, she could hear the deafening echoes of her thoughts.

5. Waking up from the pleasant discomfort of a dream is never easy.