Which antenna type is primarily used for high-gain applications such as satellite communications and radar systems, offering a narrow beam width?

Correct option is B

​$$\bullet \ \text{Parabolic antennas use a parabolic reflector to focus electromagnetic waves into a highly directional beam.} \\[6pt]\bullet \ \text{This focusing action results in very high gain and a narrow beamwidth, which are essential for:} \\[6pt]\quad \bullet \ \text{Satellite communications} \\[4pt]\quad \bullet \ \text{Radar systems} \\[4pt]\quad \bullet \ \text{Long-distance point-to-point links} \\[8pt]\bullet \ \text{The feed antenna placed at the focus illuminates the reflector, and the reflected waves travel parallel to the axis, concentrating energy in one direction.}$$​​