<span>Oxymoron is something which seemingly cannot be, yet it is; a contradiction. </span>
The answer is A. hope this helps.
can you please put some more detail?
A dangling modifier is a type of a modifier which is placed incorrectly or the noun it is supposed to modify isn't clearly stated in the sentence.
Having this in mind, the sentence which contains a dangling modifier is <span>A. Playing with the children, it was obvious they had a good time.
It should be rewritten somehow to say: It was obvious they had a good time playing with the children. </span>