Karen is a strong swimmer. one afternoon she is having a picnic at a lake and sees a man she does not know drowning. generally, karen: select one: a. has a legal duty to rescue the man. b. has a legal duty to rescue the man, but only if her efforts will not pose a serious threat to her own safety. c. has a legal duty to rescue the man since, as a strong swimmer, she is treated as a "special class" of persons who must get involved in such situations. d. has no legal duty to rescue the man.