If an element has more than one ionic charge, how is that piece of information represented in a chemical name?

The extremely reactive metals that make up the transition elements have a propensity to interact with other elements to generate a wide range of compounds and complexes. In these so-formed complexes, an element frequently has many ionic charges or only one charge that is denoted by Roman notation or a roman number.

Transition metals react with other reactive elements to produce compounds or complexes, as we have already seen.
Let's use an illustration to clarify the idea.
Take the chemical CuCl₂, which was produced by the interaction of copper and chlorine. A chlorine atom is known to have a negative charge. CuCl₂ will have a total negative charge of -2 because it contains two chlorine atoms.

We now understand that a compound should be neutral as a whole. The combination CuCl₂ has a net charge of -2, therefore copper will acquire an equal and opposite charge in order to preserve neutrality. As a result, the combination CuCl₂ will have a positive charge on copper of 2.
Roman numerals can be used to symbolise this, as illustrated below:
Chloride of copper (II), also known as copper 2 chloride.

Hence, option D is correct.