Einstein's theory of relativity introduced the concept of:
A
Zero gravity in space
B
Relative space and time
C
Absolute space and time
D
Fixed speed of all objects
Correct Answer: Option B — Relative space and time
Explanation:
Einstein's theory of relativity revolutionized physics by proposing that measurements of space and time are relative to the observer's frame of reference, rather than being absolute and universal as previously believed.