Concept:The mean is a measure of central tendency that balances all observations in a data set.
Explanation:The mean is calculated by adding every value and dividing by the number of values.
This makes it the point where the positive and negative deviations cancel out.
In other words, the mean is the balancing point of the distribution.
Option A is wrong because the mean cannot be found from incomplete data.
Option C describes the median, which is the middle value after arranging data.
Option D also describes the median, not the mean, because extreme values affect the mean.
Hence, the best reason the mean is the best measure of central tendency is that it acts as the balancing point of the observations.
Answer:B. is a balancing point in an observation