Explanation The mean height for the five dogs is calculated by adding up all the heights and dividing by the number of dogs. The formula is: mean = (300 + 430 + 170 + 470 + 600) / 5 mean = 1970 / 5 mean = 394 Therefore, option A is correct. Option B is incorrect because it is the median height, which is the middle value when the heights are arranged in ascending order. Option C is incorrect because it is the mean height multiplied by 1.25. Option D is incorrect because it is the mean height multiplied by 1.28.
