The correct answer is C. dismissals will occur.
The phrase “heads will roll” is a metaphor that means that people will be fired or dismissed from their jobs. This is often used in a political context, when a government is trying to clean up corruption or incompetence. In this case, the minister is saying that people who are responsible for the problems will be held accountable and will lose their jobs.
Option A is incorrect because the minister is not saying that the government will change. He is saying that people will be fired, not that the government itself will be replaced.
Option B is incorrect because the minister is not saying that people will be transferred to different jobs. He is saying that they will be fired.
Option D is incorrect because the minister is not saying that heads of department will have to repent. He is saying that they will be fired.