
Answer:
b. Mean, median, and mode
Step-by-step explanation:
Mean:
Sum of all salaries divided by the number of salaries.
Since all salaries will be increased by 10%, the mean will also be raised by 10%.
Median:
The 50th percentile, which is the salary that separates the upper 50% of the salaries from the lower 50th percnetile. Since all salaries will be increased by 10%, the median will also be raised by 10%.
Mode:
Most common salary, since all are raised by 10%, the mode also is increased by 10%.
Thus, the correct answer is given by option b.