If the pitot tube has completely frozen over, what will accelerating show?

When the pitot tube is completely frozen over, it becomes blocked and unable to measure the dynamic air pressure necessary for determining airspeed. The airspeed indicator relies on the difference between the static pressure (from the static port) and the dynamic pressure (from the pitot tube) to calculate an accurate reading.

When the aircraft accelerates in this scenario, the airflow may not be properly captured by the pitot tube due to the blockage. Since the airspeed indicator is unable to receive updates on dynamic pressure changes as the aircraft accelerates, it will not reflect any change in airspeed. As a result, the airspeed reading remains constant, even though the actual speed of the aircraft is increasing. This is why the correct answer indicates that there will be no change in airspeed readings from the indicator, despite the aircraft's acceleration.