My teacher talked for an hour about the uselessness of long speeches.

A. Idiom
B. Simile
C. Irony
D. Metaphor

D?

http://literary-devices.com/

No. Look up those terms!

ok C?

Right

No, the correct answer is C. Irony.

To get to the answer, you need to understand the definitions and examples of each option:

A. Idiom - This refers to a phrase or expression that has a figurative meaning different from its literal meaning. For example, "kick the bucket" is an idiom that means to die. This option is not applicable to the sentence given.

B. Simile - This is a figure of speech that compares two different things using the words "like" or "as." For example, "He runs as fast as a cheetah." This option is not applicable to the sentence given.

C. Irony - This is a literary device where the intended meaning of a situation is different from what is expected or appears to be. It often involves a contradiction between what is said and what is meant. In the sentence provided, the teacher spent a long time talking about the uselessness of long speeches, which is an ironic situation.

D. Metaphor - This is a figure of speech that makes a comparison between two unrelated things, stating that one thing is another thing. For example, "Her voice is music to my ears." This option is not applicable to the sentence given.

Therefore, the correct answer is C. Irony because it best describes the situation where the teacher spends a long time discussing the uselessness of long speeches.