Answer :
The statement of radio telescopes use to gather and focus radio waves "a tall rotating tower."
What are radio waves?
Radio waves are a form of electromagnetic radiation that are commonly used in communication devices like television, mobile phones, and radios.
What is radio telescope?
A radio telescope is a radio receiver and antenna that detects radio waves from astronomical radio sources in the sky. Radio telescopes come in a variety of shapes and sizes, depending on the type of radio waves they detect. An antenna system that detects radio-frequency radiation emitted by extraterrestrial objects such as stars, galaxies, and quasars with wavelengths ranging from around 10 meters (30 MHz) to 1 mm (300 GHz).The parabolic dish antenna is the most adaptable and powerful type of radio telescope.
The parabola is a helpful mathematical form that causes incoming radio waves to bounce up to a single point above it, which is known as a focus. The parabolic surface is equatorially mounted on a tall rotating tower in certain radio telescopes, with one axis corresponding to the Earth's rotation axis.
Equatorial mounts are appealing because they allow the telescope to track a place in the sky as the Earth rotates by moving the antenna around a single axis that is parallel to the axis of rotation of the Earth.
Hence the correct answer is C.
Learn more about radio waves here
https://brainly.com/question/13989450
#SPJ2