To which functions does the Challenger 300/350 MFD COM display provide control capability?

The Challenger 300/350 MFD COM display provides control capability primarily for squelch mode selection, COM test functions, and frequency tuning. This is critical because the COM display functions are integral to communication management within the cockpit.

Squelch mode selection allows pilots to manage background noise levels, ensuring that they can communicate clearly and effectively without distractions. The COM test function is essential for ensuring that radio equipment is functioning properly before flight, contributing to overall flight safety. Frequency tuning is vital as it allows pilots to select and change communication frequencies quickly, which is crucial for maintaining contact with air traffic control and other parties during various phases of flight.

In contrast, other areas such as navigation and traffic management, weather radar, terrain awareness, and fuel management focus on different systems within the aircraft that do not pertain directly to the functions of the COM display. Thus, these options are not correct in the context of what the MFD COM display specifically controls.