Which statement best describes the difference between Preconventional reasoning and Postconventional reasoning? (AKS 12)

The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling

Answertechnician (a) is correct;

//(b) both involve the use of levers;