Examine the following two-paragraph draft about two explanations for a decline in attendance. Paragraph 1: [1] A museum studied why weekday attendance had fallen. [2] It is more likely that parking caused the decline than shorter evening hours. Paragraph 2: [3] One explanation was that construction reduced nearby parking. [4] Another was that the museum shortened its evening hours. Which revision makes sentence 2 compare like grammatical structures most clearly in this passage about two explanations for a decline in attendance?