Figure 2 depicts the movement-per-hour (

Y

axis) recorded from 718 children between ages Birth to 16 years (

x

axis). Each dot is the data recorded for an individual child. The mean at each age is also shown as a curve across the ages that resembles an upside(inverted)

U

. Three individual points are annotated as

P1,P2

, and

P3

and three points on the curve are annotated as

A^('),B^(')

, and

C^(')

. Which of the following is true?\ A. The graph can be used to study whether age changes in movement create an invariant sequence\ B. A researcher adopting the normative approach to development would be interested in differences in activity that is evident by comparing

A^(')

to

B^(')

to

C^(')

.\ C. A researcher adopting the normative approach to development would be interested in differences evident by comparing P1 to P2 to P3.\ D. The fact that children at birth are all tightly clustered, but children at 12 years are really spread out, illustrates why chance messes up our ability to make predictions in development.

Figure 2 depicts the movement-per-hour ( Y axis) recorded from 718 children between ages Birth to 16 years ( X axis). Each dot is the data recorded for an individual child. The mean at each age is also shown as a curve across the ages that resembles an upside(inverted) U. Three individual points are annotated as P1,P2, and P3 and three points on the curve are annotated as A,B, and C. Which of the following is true? Figure 2 depicts the movement-per-hour ( Y axis) recorded from 718 children between ages Birth to 16 years ( X axis). Each dot is the data recorded for an individual child. The mean at each age is also shown as a curve across the ages that resembles an upside(inverted) U. Three individual points are annotated as P1,P2, and P3 and three points on the curve are annotated as A,B, and C. Which of the following is true