The correct answer is
Electric charges produce electric fields.
In fact, electric fields are produced by electric charges. For instance, the electric field produced by a single-point charge is radial, and its intensity decreases as the inverse of the square of the distance from the charge, according to:
[tex] E=k\frac{q}{r^2} [/tex]
where k is the Coulomb's constant, q is the magnitude of the charge and r is the distance from the charge. If the charge is positive, the electric field points away from the charge; if the charge is negative, the electric field points toward the charge.
