Which sentence is an example of theme?

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1 point
After a long journey, the hero comes home to a warm welcome.
The waves rolled up on the shore, crashing over one another in their hurry to reach my toes.
Sometimes, the hardest part of a task is deciding what to do.
When she woke from her nap, Aurora felt better and was able to go out with her friends.

Sometimes, the hardest part of a task is deciding what to do.