C) While walking along the beach, a huge wave almost swept me away.
Explanation:
<em>Dangling</em> means loosen, so a <em>dangling modifier</em> means that the structure has been wrongly placed in the sentence for the item the modifier should be affecting is not present or confusing in the sentence.
<em>While walking along the beach</em> is a dangling modifier. Theoreticaly, an adverbial of time modifies the idea expressed in the main clause. The idea from the main clause is that a huge wave almost swept the speaker away. If we ask the speaker : "When did a huge wave sweep you?", he / she will answer : "While <em>my </em>walking along the beach." He / She will tell <em>who</em> was walking along the beach. In the adverbial phrase the <em>ing</em> requires an objective pronoun or a possessive determiner as a subject. If the subject is not explicit in an a pattern such as <em>while walking</em>...., <em>a huge wave...</em>, the subject of the modifier should be the same as the subject from the main clause; in this case it would be senseless to say that it was the huge wave that was walking along the beach. Then, the correct modifier would be: <em>While me / my walking along the beach,a huge wave almost swept me away</em>
<span>The supernatural event that happened in Morte D’Arthur was when the character Arthur was able to draw the sword called Excalibur from the stone while he’s still a boy. Excalibur is the legendary sword of King Arthur. Excalibur is also called Caliburn. This sword has magical powers.</span>