Rahim and His Mother Are Making Spaghetti

Multiple Choice

Rahim and his mother are making spaghetti.She shows him how much water to put into the pot, but then realizes that it is too full and so she gets a larger pot and helps Rahim to pour the water from one pot to the other.As Rahim is doing so, his mother carefully explains that they still have the same water but by using the larger pot, the water will not boil over the sides when the spaghetti is added.What form of training is his mother using?

A) identity
B) reversibility
C) causality
D) transitivity