Answer: Diagram (c) represents the force between the two charges.
Explanation :
Given the two charges +5 C and -9 C. The force between them will be :
![F=k(q_1q_2)/(r^2)](https://img.qammunity.org/2020/formulas/physics/high-school/uk8f4z91yssptetrk6ebnulp741i636gb7.png)
r is the distance between the charges.
In this case, the force between the two charges is attractive as the charges are alike. So, the resultant force will have same magnitude and it will be attractive in nature.
Hence, the correct option is (c).