1.the four girls ran in a relay race as a team. if each girl ran one part ofthe race, what was the team’s total time?

It depends on the total of how long the race took, but each girl ran 1/4 of the race so if you know the total time just divide the time by 4 and you will get the answer. If you don't just say each girl ran 1/4 of the time.

The set of population data in option C is the least dispersed from its mean.

Step-by-step explanation:

The observations of first option are 2,3,2,9.

The observations of second option are 4, 0, 4, 0.

The observations of third option are  6, 2, 2, 2.

The observations of fourth option are 9, 3, 5, 3.

Since the variance of third option is minimum, therefore the set of population data in option C is the least dispersed from its mean.