Which is a text clue that helps readers understand the theme of valuing all life in "Birdfoot's Grampa”?

Grampa walks into the grass to release the toads, showing that he cares about their lives even though it is raining and inconvenient. That action is a clear text clue for the theme of valuing all life. Birdfoot’s impatience and the rain describe the situation, but they do not show the theme as directly.

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