An interjection is always

A. preceded by preposition.
B. followed by an exclamation point.
[C. related to another word in the sentence.]
D. intended to show feeling.

I disagree.

http://www.writingcentre.uottawa.ca/hypergrammar/interjct.html

is it d then

Yes, it's d.

To determine the correct answer to the question, "An interjection is always," let's break down the options:

A. Preceded by a preposition: This option is incorrect because interjections are not always preceded by prepositions. Interjections are typically standalone words or phrases that express strong emotions or surprise. They can appear at the beginning, middle, or end of a sentence without any specific relationship to other words or prepositions.

B. Followed by an exclamation point: This option is incorrect as well. While interjections often convey strong emotions or excitement, they may not necessarily be followed by an exclamation point. The use of an exclamation point depends on the intensity of the emotion being expressed and the writer's style.

C. Related to another word in the sentence: This option is correct. Interjections are often related to other words or phrases in the sentence as they express emotions, reactions, or attitudes. However, the relationship between an interjection and other words in the sentence can vary. Interjections can stand alone or be connected to other words based on the context.

D. Intended to show feeling: This option is correct as well. Interjections are words or phrases used to convey strong emotions or feelings in a sentence. Examples of interjections include "wow," "oh," "ouch," "yay," or "ugh." They add emotional emphasis or express the speaker's reaction to something.

Therefore, the correct answer is option C: "related to another word in the sentence" and option D: "intended to show feeling." An interjection can be related to another word or phrase in the sentence, but it can also stand alone, and it is always used to express strong emotions.