Question

1 point in order to remove the body effect, the substrate of an n-channel enhancement mode mosfet should be

Answer 1

Though it is not easy to remove the body effect in a n-channel enhancement mosfet, but a possible solution can be that the source and substrate have the same potential.

Therefore one method to achieve this is to connect the substrate with the source. Also two mosfets can be connected together with the drain connected to the source of the next transistor.