Answer: D
Step-by-step explanation:
Mean is the average of all numbers, and spread is the range of the data set.
Mean:
2+3+4+4+7=20
20/5=4
The mean is 4.
Spread:
Minimum 2
Maximum 7
7-2=5
The spread is 5.
Either way, even if you didn't know what the center was, spread has 4 different options meaning you can just solve for spread if needed. Just a heads up!