How does Magnesium become an ion? What is the charge of the Magnesium ion?

Question

a
The magnesium atom lost two electrons. The ion has a negative two charge.
 b
The magnesium atom gained two electrons. The ion has a positive two charge.
 c
The magnesium atom gained two electrons. The ion has a negative two charge.
 d
The magnesium atom lost two electrons. The ion has a positive two charge.

GPT 3.5 · Answer

d The magnesium atom lost two electrons. The ion has a positive two charge.