What does energy and transfer mean? in your opinion please

Energy transfer is the process by which energy is relocated from one system to another, for example, through the transfer of heat, work or mass transfer.

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.