What altitude should the aircraft reach at QUIBL during the Bengal Departure?

The correct altitude for the aircraft to reach at QUIBL during the Bengal Departure is 15,000 feet MSL (Mean Sea Level). This altitude is specified in the departure procedures to ensure safe vertical separation from other traffic, as well as compliance with air traffic control instructions.

In this context, departures often include specific altitude assignments that pilots must adhere to, especially when navigating through busy airspace. The altitude of 15,000 feet is likely selected for its appropriateness in ascending to cruising levels while providing ample clearance from terrain and obstacles, as well as facilitating efficient air traffic management.

The other altitude options are not correct because they do not meet the procedural requirements for the Bengal Departure as defined in the relevant air traffic control guidelines. Lower altitudes may not ensure the necessary separation from other aircraft, while higher altitudes may exceed the safe climbing capability of the aircraft at that phase of departure or may not align with the specific routing established for the departure.