Concept:The mean is the arithmetic average that balances all values in a data set.
Explanation:The mean is the sum of all observations divided by the number of observations.
It is the balancing point because the sum of deviations above the mean equals the sum of deviations below the mean.
It uses every value in the data, but it is affected by extreme values, not free from them.
It is not the midpoint of an array; that is the median.
It cannot be calculated accurately from incomplete data.
Therefore, the reason the mean is the best measure of central tendency is that it serves as the balancing point of the observations.
Answer:C. is a balancing point in an observation