Answer: Option (d) is the correct answer.
Step-by-step explanation:
An ion is a specie that contains either a positive or a negative charge.
For example,
,
,
,
, etc are all ions.
Therefore, an ionic equation is defined as an equation that contains participating dissolved species in the form of ions.
For example,
![Ag^(+) + NO^(-)_(3) + Na^(+) + Cl^(-) \rightarrow AgCl(s) + Na^(+) + NO^(-)_(3)](https://img.qammunity.org/2019/formulas/chemistry/college/vi0cr7nc9u8atk7w3q0nvgf3mgvzoismf7.png)
Here, only AgCl is the precipitate as it is insoluble but rest of the species are ions as they have dissolved.
Thus, we can conclude that a complete ionic equation an equation showing all dissolved compounds as ions.