What great weather we are having; thunder and lightning always make an outdoor pool party fun!

What is the verbal irony in this statement?

The thunder and lightning was unexpected but will make the party fun.
We know thunder and lightning ruin a pool party but the speaker does not.
Thunder and lightning will ruin a pool party, so the weather really isn't "great."
Nice weather is characterized by thunder and lightning.

C. Thunder and lightning will ruin a pool party, so the weather really isn't "great."

Explanation:

Verbal irony, simply put, is saying one thing, but meaning another, usually completely opposite. It is closely associated with sarcasm and it is often used for humorous effect.

In this particular case, it is obvious that thunderstorm and pool party don't go together. The author is aware of this, so, by saying the weather is "great", when clearly it is not, he uses a verbal irony.

use it to buy the fattest block of cheese

the answer is decimated