The correct answer choice is: The emphasis on the darkness of the lake and the presence of a mysterious shadow make the lake seem dangerous.
This response effectively captures how the poet's diction creates an atmosphere that suggests danger and mystery. The repetition of "dark," "deep," and mentions of "shadows" and the "mysterious shadow" contribute to a sense of foreboding and intrigue about Ghost Lake. The tone evoked by these descriptions enhances the chaotic and eerie feeling of the setting, which aligns with the notion of danger.