Refer to the Information Provided in Table 12 -After Examining the Bivariate Relationship Between Years of Schooling and Answer

Refer to the information provided in Table 12.1 below to answer the questions that follow.
Table 12.1:
2001 survey of 1,000 randomly selected adult residents of Seattle, Years of schooling by whether or not one agrees with the statement,
"Seattle should require the registration of hand guns with the city police department."
$$\begin{array} { l | c c c c c c } \text { Years }& \text { Strongly } && &{ \text { Strongly } } \\ \text { of School }&\text { Agree } & \text { Agree } & \text { Disagree } & \text { Disagree } & \text { Total } & ( \mathrm { N } ) \\\hline \text { Under } 8 & 30 \% & 25 \% & 30 \% & 15 \% & 100 \% & ( 100 ) \\8 - 11 & 35 \% & 20 \% & 30 \% & 15 \% & 100 \% & ( 100 ) \\12 & 40 \% & 30 \% & 15 \% & 5 \% & 100 \% & ( 200 ) \\13 - 15 & 50 \% & 25 \% & 20 \% & 5 \% & 100 \% & ( 300 ) \\16 & 60 \% & 25 \% & 10 \% & 5 \% & 100 \% & ( 200 ) \\17 \text { or more } & 80 \% & 10 \% & 5 \% & 5 \% & 100 \% & ( 100 ) \end{array}$$
-After examining the bivariate relationship between years of schooling and knowledge about politics, Dr. Bushhead controls for hair color. He finds that the relationship in partial tables is identical to the bivariate tables. In the elaboration paradigm, this is

A) replication pattern.
B) identification pattern.
C) specification pattern.
D) explanation pattern.