The term `Doctor winds` is commonly used to refer to a specific type of wind. Option 1, which states that `I and III` are also known as `Doctor winds`, is partially incorrect. While option I, Foehn, is indeed known as `Doctor winds`, option III, Chinook, is not. Therefore, option 1 is incorrect. Option 2 states that only option II, Harmattan, is known as `Doctor winds`. This is the correct answer, as Harmattan is indeed referred to as `Doctor winds` in some regions. Option 3, which states that only option III, Chinook, is referred to as `Doctor winds`, is incorrect. Option 4, which states that both options I (Foehn) and II (Harmattan) are known as `Doctor winds`, is incorrect. Therefore, the correct answer is option 2.