Microwaves are defined as electromagnetic radiations with a frequency ranging between 300 MHz to 300 GHz while the wavelength ranges from 1 mm to around 30 cm. The microwave radiation is commonly referred to as microwaves. They fall between the infrared radiation and radio waves in the electromagnetic spectrum. radio waves in the electromagnetic spectrum.
D is the correct answer
every other option contains an element
Manipulation of the independent variable should change the dependent variable, the value of which "depends" on the independent variable's change in value.
