The correct response is: As the charge increases, the force increases in strength.
According to Coulomb's law, the electric force (F) between two charged objects is directly proportional to the product of the magnitudes of their charges (q1 and q2) and inversely proportional to the square of the distance (r) between them. This can be expressed with the formula:
\[ F = k \frac{|q_1 \cdot q_2|}{r^2} \]
where \( k \) is Coulomb's constant. Thus, if the magnitudes of the charges increase, the electric force also increases in strength.