Answer:
The correct answer is: situational, dramatic and verbal irony.
Explanation:
The irony is a literary device we use to express certain meanings by using language that signifies the opposite, to indicate a higher negative implication through the positive wording.
There are three types of irony: dramatic, situational, and verbal.
Dramatic irony represents the situation when the audience understands what is happening in a certain situation better than the characters. The best example of this type of irony can be found in Shakespeare's <em>Romeo and Juliet</em> when Romeo dies because he believes Juliet is dead.
Situational irony occurs when some action has the opposite result from what is expected.
For example:
John realizes it's his wife's birthday. He goes to buy her a present, and after buying it, he realizes the birthday was three days ago.
Verbal irony occurs when the speaker says the opposite of what he/she thinks.
For example:
The cousin you hate is coming to see you and you are saying: <em>What a nice surprise</em>!
C because a market research helps when you are buying something which he is (car) and this is a secondary resource because it is recommended by someone rather than them finding the research himself.
The tone would be determined by the kind of people the author is writing for. A story for children is going to have a different tone than a graduate thesis even if they are on the same topic.
Hope that helps.