A neutral metal sphere is touched by a negatively charged metal rod.As a result, the sphere will be negatively charged and the metal rod will be negatively charged.
This is a case of charging by conduction. When a charged object is used to charge a neutral object by conduction, the previously neutral object acquires the same type of charge as the charged object. The charge object maintains the same type of charge that it originally had. So in this case, both objects have a negative charge.