Correct option is (c) 300Ω
Best explanation: A popular variation of the half-wave dipole is the folded dipole. Like the standard dipole, it is one-half wavelength long. However, it consists of two parallel conductors connected at the ends with one side open at the center for connection to the transmission line. The impedance of this popular antenna is 300 V, making it an excellent match for the widely available 300-V twin lead.