Detailed Instructions: In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
Q: A girl is turning sixteen and is experiencing changes to her breasts and other areas as she matures. These changes as she enters adulthood signify (A) procreative adjustments (B) cohesive ability (C) coherent reduction (D) reductive properties
A:
A