Which of the Following Individuals Would Be Characterized as Experiencing

Which of the following individuals would be characterized as experiencing flow?

A) Sheila,who,despite viewing her work as merely a job,performs her work conscientiously
B) Larry,who sees his work as an artist as a calling
C) Arnie,who views his present job as merely a stepping stone in his career
D) Montel,who often becomes so immersed in his writing that he loses all sense of self and time