Answer:
Sarcasm
Step-by-step explanation:
The information to be delivered to Jim is that Mrs. Jone's pig received an award. Clearly, the speaker does not care about the information, as we can perceive when we see the choice of words ("fat pig" and "a prize". No specificity there shows that the speaker isn't familiar with it and doesn't care). So the word Important is there only to convey sarcasm.