A physical education teacher is conducting research related to elementary children's time spent in physical activity. As part of his research, he collects data from schools related to the number of minutes that they require children to participate in physical education classes. She finds that the most frequently occurring number of minutes required for children to participate in physical education classes is 22.00 minutes. Which measure of central tendency does this statement represent?
a. Mean
b. Median
c. Mode
d. Range
e. Standard deviation