Spoilers for Christmas Sheet :)

Hi, first of all, happy holidays! These spoilers introduce in very small steps how I would solve it. That doesn't mean that there is no other way to solve the corresponding exercise. Also, try to use them sparingly and one at a time, i.e. read a spoiler, think about it and then if you still have no idea proceed to the next one.

Parsimony Methods: (d)

Distance-based Methods

Is it a Christmas Tree (f)

Waterman (g)