The correct answer is C. 355,432
Since the question specifies that the zoo had more visitors than the water park (325,737), but fewer than the amusement park(359,479), we look for an answer that lies in the range 325,737 to 359,479.
Compare each option with the range and eliminate the options that don't fit
A. 312,479 (not the answer because it lies below the range)
B. 323,839 (not the answer because it lies below the range)
C. 355,432 (It lies in the range)
D. 374,034 (not the answer because it lies above the range)