I have to agree with Steve, it is unusual to have the situation rigid as you describe. Weaker team members are assigned rudimentary work, while the stronger members tackle the challenging work. If team building is in place, the weaker members are given opportunities to work with stronger members, who mentor them. Training is made available and everyone encouraged to participate. Of course as the economy shrinks, training is the first thing out the door, then everyone starts protecting their position. It's like grabbing a handful of sand, the harder you grip the more you lose. So the final answer is, it depends on many influences. Hard and fast answers aren't meaningful. But hear is my attempt. The answer is 3.