The correct answer would be A because you need a comma in between the <em>A </em>and <em>S</em>
C. because its the only one that goes smoothly while reading
This is just a thoughts
1 his head might be clogged with thoughts
2 their is blood literally on his head
3 or some blood from something/someone is drooling on his head
Answer:
I believe there are three factors that lead to success, pursuing your passion, working hard, never giving up, remaining positive, and collaborating well with others.
P.S. You put 5 factors that lead to success but I'll leave it the way it is.