Spearman's two factor approach included:

A) a general factor (g) and a specific factor (s) .
B) fluid, culturally free intelligence and crystallized, learned intelligence.
C) the process factors of assimilation and accommodation.
D) higher order and lower order intelligence.

Specific Factor

An element or aspect that has a particular influence on an outcome or situation, distinguishing it from other variables.

Spearman's

Refers to Spearman's rank correlation coefficient, a statistical measure used to assess the strength and direction of association between two ranked variables.