Answer:
correct option is b . Acquisitive stage
Explanation:
we know that K. Warner Schaie's stage in 7 stage
1st was Stage of acquisition that are correspond to the individuals of childhood and the adolescence and gathers information/ knowledge
and they purchase necessary skill to able the participating in society of the effective way with out take in to account the rest of variable
so we can say here correct option is b . Acquisitive stage