Terrace talk - olive tree beauty parade

Out in the olive grove to pick a Big Tree to move into the terrace above the pond. Criteria are very tight: old but healthy, a single trunk not a group, gnarled roots that show at the base, easy access for the digger and - most important - not going to leave a nasty gap. The gap will be filled with a new young tree, of course, but it will takes decades if not centuries to reach this sort of size and character. Three trees look promising - which to choose?
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