Which is an idea that einstein introduced in his theories of relativity? a.) space is made up of three dimensions. b.) space and time are separate and distinct entities. c.) space-time bends due to the masses in the universe. d.) gravity is caused by a force of attraction between two masses.

Space-time bends due to the masses in the universe.

Choice C is correct

Explanation:

Space-time bends due to the masses in the universe is an idea that Einstein introduced in his theories of relativity.

If a body of any mass is placed down anywhere in the Universe the space around it will curve in response.

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

the answer is b)3/8x+1