What is the maximum airspeed restriction inside Class B airspace on the Standard Instrument Departure (SID)?

In Class B airspace, the maximum airspeed restriction during a Standard Instrument Departure (SID) is indeed 250 knots. This limitation is designed to maintain safe and orderly operations within the complex and congested airspace where Class B airspace is typically found, particularly around major airports.

The imposition of this airspeed limit helps to prevent potential conflicts with slower aircraft that may be departing or arriving at the airport and enhances the efficiency of air traffic control by allowing for better management of aircraft separations.

While other options provide varying maximum airspeed limits, they exceed what is acceptable for Class B airspace operations during a SID. As a result, adhering to the 250 knots maximum helps ensure safety and efficiency for all aircraft operating in and around busy terminal areas.