Answer:Option (b) is the correct answer.
Step-by-step explanation:
When a neutral element loses an electron then it acquires a positive charge and it is known as a cation.
For example, when a neutral iron atom loses three electrons then it forms a ion.
On the other hand, when a neutral element gains an electron then it acquires a negative charge and it is known as a anion.
For example, a sulfate ion means ion.
Thus, we can conclude that out of the given options sulfate is not a cation.
Step-by-step explanation: