Which type of transport does NOT require energy?

The correct choice is the option indicating both facilitated diffusion and passive transport as types of transport that do not require energy.

Facilitated diffusion is a process in which molecules move across a cell membrane through protein channels without the need for energy. This typically occurs when substances are moving down their concentration gradient, meaning they move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Passive transport is a broader category that encompasses all types of transport that do not require energy. This includes not only facilitated diffusion but also simple diffusion, where small or nonpolar molecules can directly pass through the lipid bilayer of the cell membrane.

Both facilitated diffusion and passive transport are fundamental mechanisms by which cells maintain homeostasis and regulate their internal environment without expending energy, thus playing crucial roles in cellular functions.