Ten-year-old Rana is watching as Zarina does the classical conservation of volume demonstration. When Zarina pours the water from a tall thin glass into a short wide one, Rana says that there's still the same amount of water because it could be poured back and forth all day. Rana has mastered
A) seriation.
B) classification.
C) transitive inference.
D) reversibility.
Question 2
Adnan trades Umar 100 pennies for 10 dimes. Later, when Adnan wants to trade back, Umar refuses, because he says he has much more money than Adnan and won't trade for only 10 puny dimes. Apparently, Umar has not yet mastered
A) transitive inference.
B) reversibility.
C) categorization.
D) class inclusion.