Which of the following is an external resource used to obtain weather information?

• A. Weather
• B. Air traffic control
• C. Verbal communication
• D. Charts

Answer: (A)

Weather information must come from an external meteorological source outside the aircraft. The Weather option represents that data source, including current conditions and forecasts from METARs, TAFs, radar, and official briefings. Air traffic control is mainly a communication channel and can relay weather updates, but it isn’t the primary source of weather data. Verbal communication is simply a way to receive information, not the data itself. Charts are planning tools that may show weather trends or depiction information, but they aren’t the primary source of current weather data. So, the external weather resource provides the actual data you need for safe flight planning and decision-making.