Why is a field-effect transistor considered a high impedance device?

A Field-Effect Transistor (FET) is distinct from a bipolar junction transistor because it uses an electric field to control current flow rather than a control current. The gate is electrically insulated (in a MOSFET) or reverse-biased (in a JFET) from the main conducting channel. Because there is no physical path or forward bias for electrons to flow into the gate, it essentially draws zero DC current. According to Ohm's law, a device that draws almost no current for a given applied voltage presents a extremely high input impedance. Options suggesting the device uses high resistance materials or functions at high current are incorrect because "high impedance" specifically refers to the input (gate) terminal's lack of current draw, not the device's overall channel resistance or power rating.