Which of the Following Examples Best Illustrates Piaget's Concept of Assimilation

Which of the following examples best illustrates Piaget's concept of assimilation?

A) A person who quits the baseball team after learning that you must wear extremely tight, nylon pants.
B) A child who changes her scheme of "all snakes are poisonous and deadly" after easily surviving a bite from a common grass snake.
C) A woman who, after being stuck on an elevator, decides that all cable-driven devices are unsafe.
D) A student who learns that opossums can hang from tree branches by their tail and therefore adds opossums to her scheme of animals with prehensile tails.