"my name is bob jackson. i have a wife and seven children. i am going insane." how might the syntax of the above sentences best be varied in order to imply a causal relationship between the second and third sentence? a) i have a wife and seven children, but i am going insane. b) i have a wife and seven children, and i am going insane. c) i have a wife and seven children, while i am going insane. d) i have a wife and seven children, and i'm not sure why i am going insane.