In general, resistor's resistance depends (slightly) on the temperature of the resistor, with the relationship depending on the details of the material. Do you expect the temperature of a resistor to increase or decrease as you run more current through it

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.