Read the passage. Paragraph 1: Students proposed a vegetable garden for an unused courtyard. They resolved questions about water, tools, and access. Paragraph 2: One issue remained before the final vote. [The students faced one unresolved issue who would maintain the garden during summer before voting.] They created a rotating schedule with the neighborhood association. Which revision uses paired dashes to enclose the embedded question without treating the final phrase as part of the interruption?