One would add first names if there were multiple authors mentioned with the same surname. If there are many more authors one would add "et al." inside of the parentheses. If the name of the author is unknown then one would add the title of the work which is being cited.
Answer:
Functions of the passive voice. The passive voice is used to show interest in the person or object that experiences an action rather than the person or object that performs the action. In other words, the most important thing or person becomes the subject of the sentence.
Explanation:
Yes there was a real king athur
Your answer would be B. Hope this helps!