The correct response to compare and contrast the functions of the roots and stems of a plant is:
The stems and the roots are both transportation systems, moving different things the plant needs. However, the roots actually get water and essential nutrients out of the soil, while the stems just deliver these things to where they are needed.
This response accurately reflects that roots absorb water and nutrients from the soil, while stems primarily serve to transport these substances throughout the plant. The roots and stems work together in the plant's overall function, but they have distinct roles in the transportation process.