Which of these antennas does not produce circular polarization?

A loaded helical-wound antenna, commonly known as a "rubber ducky" found on portable handheld transceivers, is essentially a physically shortened monopole. Despite its coiled wire shape, it radiates a linearly polarized wave (typically vertical). In contrast, an axial-mode helical antenna is specifically constructed with coil dimensions on the order of a wavelength, causing it to radiate a highly directional, circularly polarized wave off its end. Crossed dipoles fed 90 degrees out of phase and Lindenblad antennas are also explicitly designed to create rotating electric fields. Therefore, the loaded helical-wound antenna is the only option listed that does not produce circular polarization.