A. unbalanced (a): madness/unbalanced
B. immature (a): immature/ not fully developed
C. insufficient (a): not enough / lacking
D. irrational (a): irrational
Vocabulary question, based on the meaning to choose answer B – immature.
Excerpt: Before the age of seven, children tend to have an immature form of recall with no sense of time and place in their memories.
Before the age of 7, children often have an immature type of recall, without any awareness of time and place in their memory.