During which phase of flight are aircraft typically on the taxiway?

Aircraft are typically on the taxiway during both the arrival and departure phases of flight. During the arrival phase, after landing, an aircraft taxis back to the airport terminal or gate, navigating along the designated taxiways. Similarly, during the departure phase, prior to takeoff, an aircraft must also taxi from the terminal or gate to the runway. This includes various ground movements that take place before a flight departs and after it arrives.

The enroute phase, on the other hand, refers to the time when the aircraft is actually in the air between departure and arrival, therefore, it does not involve taxiing. This makes the option encompassing both the arrival and departure phases the only correct choice regarding the typical use of taxiways in an aircraft's journey.