Ciaffone quiz question I got wrong

[Robk]

I was somewhat surprised by the answer to this question. I was hoping someone could give me a better explanation than he does.

4. Position is most important when there are:

(a) Two players in for the flop.

(b) Four players in for the flop.

(c) Six players in for the flop.

[Robk]

Answer: (b) When heads up, it is less dangerous to check a good hand. With many players, you may be able to save a bet by your position, but you will not win the pot with it. Position is most important with three or four players.

[Kurn, son of Mogh]

What do you find confusing about this answer? I got this one right and thought it was obvious.