Which aspect of relativity makes faster-than-light travel theoretically possible?

A) time dilation

B) the ability of space-time to move

C) mass-energy equivalence

D) gravity bending light

The answer is Time Dilation. This makes faster-than-light travel theoretically possible. According to Einstein, speed is constant, but the time will slow down. This will happen when you accelerate and the light will take more time because the distance that it needs to cover will be greater, so to maintain the speed of light, time will slow down, this will make the distance covered the same. The greater the acceleration, the greater will be the time dilation. And as gravity is nothing but an acceleration, where ever the gravity is strong, the time will pass slower.