Not sure but i will say D
I would assume that the magnesium would have to come into contact with an ion in order to become a magnesium ion.
Diffuse reflection have a great day
I’m not sure because a baseball player run 10 meters north but get out and he turn around and that a other 10 meters for turning around and 4 more meters to his dugout it’s could be d or a because it’s closer to 24