What communication is required when flying in Class B airspace?

In Class B airspace, two-way radio communication is required between pilots and air traffic control (ATC) to ensure safe and efficient operations. This requirement is established to manage the high volume of traffic commonly found in these areas, which typically surround major airports. By maintaining two-way communication, pilots can receive clearances, instructions, and traffic advisories, which are vital for avoiding conflicts with other aircraft and safely navigating within the controlled airspace.

Without two-way communication, pilots would not be able to comply with ATC instructions, and it could lead to potentially dangerous situations, given the density of air traffic in Class B airspace. The other options suggest reduced or no communication requirements, which does not align with the safety protocols necessary for managing the complex environment of Class B airspace effectively.