The correct answer is B. Irony.
Explanation
Sarcasm is a concept that refers to a cruel mockery that offends or mistreats someone or something. Sarcasm is a kind of irony that appeals to the humor with wit. However, it is malicious as it seeks to hurt the recipient. Also, it is expressed in an obvious way or through indirect or covert criticism. On the other hand, the irony is a disguised mockery that consists of making sense of the opposite of what is said through a certain intonation or body language. To conclude, sarcasm and irony are related, however, sarcasm is characterized by being more aggressive or offensive. So the correct answer is B. Irony.
The answer is C- corruption is rampant in institutions.
The verb <em>to cost </em>is C. linking irregular weak verb.
It is irregular because its past form is not formed with -ed, but: cost - cost - cost. It is linking because it links the subject with its price.
