James had difficult beginning work, but once it did he didn't stop. He worked best when he had what?
Options:
- panic
- stress
- anxiety
- accomplishing
- momentum Let's give stream of consciousness first:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Momentum is the force which keeps something going on. People work the best when they gain the force to keep things going.
Therefore, the answer is momentum.