o find the sum of the mean and median of List A, we first need to calculate the mean and median.

Mean (Average):
To calculate the mean, sum up all the numbers in List A and divide by the total count of numbers.

Mean = (–5 + 0 + 1 + 3 + 5 + 7 + 10) / 7 = 21 / 7 = 3

Median:
To find the median, we arrange the numbers in ascending order and find the middle value. Since the list has 7 numbers, the median will be the fourth number when arranged in ascending order.

Arranged in ascending order: –5, 0, 1, 3, 5, 7, 10
Median = 3

Now, let's find the sum of the mean and median:

Sum of mean and median = Mean + Median = 3 + 3 = 6

So, the correct answer is option B. 6.