I would say that the best answer is D.
The way C is worded doesn't really make sense.
A has the correct information, however it could be chopped down a bit more.
"Side" is the word in the sentence among the following choices given in the question that <span>should be replaced with domain specific language. The correct option among all the options that are given in the question is the second option. I hope that this is the answer that has actually come to your help.</span>
<span>The half step is the smallest interval possible in Western music. It is also known as semitone, half tone, or interval, and it has existed even since the ancient Greek times in their music. It differs from the Eastern music, whose smallest interval isn't as small as that of the Westerners.Although it has changed over time, it has still existed for a long time.</span>
I think the answer is B. Because there is a period before the sentence: "The cookies were not eaten by the children" choice B contains the misplaced modifier. Unless that was a typo.
Hope this helps!:)