The layer in the earth’s atmosphere which reflects radio waves from the earth thus, helping radio communication is:A. StratosphereB. MesosphereC. TroposphereD. Ionosphere

D. Ionosphere

The ionosphere is the layer in the Earth's atmosphere that reflects radio waves from the Earth's surface back to the ground. It is located approximately 75 to 1,000 kilometers (46 to 621 miles) above the Earth's surface and consists of ionized particles that can reflect radio waves. This property of the ionosphere enables long-distance radio communication by bouncing the radio waves off the ionized layer back to the Earth's surface.