What is an interjection?

An interjection is defined as a word or phrase that expresses a strong emotion or sudden burst of feeling. It often stands alone and is used to convey excitement, surprise, joy, or other intense feelings. For example, words like "wow," "ouch," "hey," and "oh" serve as interjections because they convey an emotional response without the need for a complete sentence. This characteristic of interjections makes them distinctive from other parts of speech, as they do not have grammatical relations with other words in a sentence but instead stand out to express the speaker's state of mind or reaction.

In contrast, the other options describe different linguistic elements: a word that connects clauses relates to conjunctions; a type of verb pertains to action or state verbs; and a method of punctuation refers to symbols like commas and periods that help clarify meaning in writing. Thus, option B aptly captures the essence of what an interjection is in the context of language and communication.