The direction of an electric field is defined as the direction of the force on a negative test charge

positive test charge

either positive test charge, or a negative test charge

WILL GIVE BRAINLIEST

The direction of an electric field is determined from the behavior of a positive test charge that is set free in the electric field.This charge moves along a distinct vector showing the direction of the electric field  Therefore the answer is b. a positive charge will move in the field.

Explanation:

The direction of the force is from the positive charge of an electric field.

The answer would be positive test charge.

the rearrangement of particles in a physical change. hope this