The correct answer is the following: <em>option B. "A vampire sat stone-still in the tree grove, wondering if his one love would accept him after she found out the truth" is the scenario that portrays a round character. </em>In literature, a round character is a type of character that shows complexity and that undergoes some sort of development throughout the story line, sometimes surprising the reader. In the scenario presented in the question, the vampire character is a complex one, as he is wondering if her loved one will accept him for who he is. This not only shows complexity, but also is a surprising description of a vampire, who are commonly shown as cold and detached beings.
I'd probably say B., because a round character has a well developed/complex personality, and the vampire seems to have the most thoughts/emotions of the four choices.