Which of the following examples can be used to demonstrate the behaviour of current electricity? a. water freezing on a lake c. water flowing down a river
b. water contained in a hot water tank d. water being held back by a dam
c. water flowing down a river
d. water being held back by a dam

mass and volume are the answers you are looking for

there are no components of a physical goal mentioned on the list of choices that you've provided.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.