Final answer:
The key characteristic of Early American Art discussed in the reading is the depiction of religious themes.
Step-by-step explanation:
The key characteristic of Early American Art discussed in the reading is b) Depiction of religious themes. Early American art often portrayed religious figures and scenes, reflecting the strong influence of religion in colonial America. Artists used religious themes to communicate moral messages and create a sense of piety and devotion among viewers. For example, paintings like John Singleton Copley's 'The Death of Major Peirson' and Benjamin West's 'The Death of General Wolfe' depict historical events with religious symbolism and significance.