Opt for designer snakeskin (6)

I believe the answer is:

choose

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'opt' is the definition.
(I've seen this in another clue)

I cannot understand how the remainder of the clue works.

(Other definitions for choose that I've seen before include "Pick, select." , "Vote" , "Make a selection" , "Think fit" , "Select, opt for" .)

I've seen this clue in The Independent.

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