Answer:
The objective of the question is somewhat unclear.
Explanation:
A) It's impossible to tell whether or not the poem's rhyme scheme is being violated. This is because we don't have a reference to the poem where the word was used.
B) The word "Mustn't" is not an example of Onomatopoeia. Onomatopoeia refers to words which when used sound like the object being described. This creates more expression and color in the literature where it is used.
Some examples of Onomatopoeia are:
C) End-Stopping refers to a poetic device that entails a pause at the end of a unit of syntax. A syntactic unit may be a sentence, phrase, or clause.
An example of an end-stopped line is given below:
How can I compare you to a sunny day?
You are more resplendent and lovely:
D) Mustn't only means one thing: "Must Not"
So the word is a contraction of two words: Must and Not.
Contractions are used in the English Language for informal conversations. They are inappropriate for formal correspondences.
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