Allie's 8^th Grade Academic Work Is a Little More Advanced

Multiple Choice

Allie's 8^th grade academic work is a little more advanced than what she is used to.She is having a hard time keeping up,particularly in science,which is her first period course.The teacher moves very fast,despite the fact that most of the students look glassy-eyed from too little sleep.What is a puberty-related biological explanation for the students' behavior in science class?

A) Sexual dimorphism
B) Early menarche
C) Androgen imbalance
D) Delayed phase preference