The object with which charge would be most strongly attracted by object A is an object with a charge of +2 C (option A). This is because opposite charges attract each other, and the force of attraction between two charges is directly proportional to the product of their magnitudes. In this case, the magnitude of the charge on object A is 1 C, while the magnitude of the charge on object B is 2 C. Therefore, the force of attraction between object A and object B will be greater than with any other option provided.
