When departing an airfield with clearance delivery service, which frequencies can be used?

The choice of frequencies is important for communication with air traffic services while departing an airfield. The frequencies available for use, particularly with clearance delivery service, are typically flight service frequencies or those designated for air traffic control communication, primarily in the VHF range often used in aviation.

The frequencies selected in the correct answer fall into the range that corresponds to proper communication with clearance delivery and other relevant air traffic services. For instance, frequencies like 128.25 and 132.65 are commonly used in many regions for flight operations and could be associated with departure or en-route communication.

The other options either introduce frequencies typically reserved for non-standard procedures or emergency use, or they may reference frequencies that do not align with standard operational practices at airfields. Thus, making the choice of option B the most relevant and correct for departing an airfield under clearance delivery service.