To best determine general forecast weather conditions covering a flight information region, the pilot should refer toA. graphical forecasts for aviation (GFA)B. weather depiction chartsC. satellite maps

A.Graphical Forecasts for Aviation

Explanation:

Graphical Forecasts for Aviation is best used to determine the general forecast weather conditions covering a flight information region. This is usually made available to the pilots for him to have a knowledge of the most likely weather condition he will encounter.

This will make him also know the effects of such conditions on the flight and also if it will be safe to go on with it.This forecast usually has the conditions for different height levels as the plane will be flown in the sky.

20: 5

explanation:

about 20% of the world's population lives in   southwest asia, but on less than 5% of the world's   land area.