In "Some Keep the Sabbath Going to Church," why does the speaker say that she has “an Orchard, for a Dome” in the first stanza?

The speaker contrasts going to church with worshipping outdoors: she keeps the Sabbath at home, with a “Bobolink for a Chorister” and an orchard instead of a church dome. The orchard’s branches provide a natural, open setting for worship, so nature can serve the same purpose as a church. Choice C best captures this idea; the poem does not suggest that only the speaker can see nature as sacred.

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