Plumped for new depot (5)

I believe the answer is:

opted

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'plumped' is the definition.
Both the definition and answer are past participle verbs.
Maybe you can see a link between them that I don't see?

'new depot' is the wordplay.
'new' indicates an anagram.
'depot' is an anagram of 'OPTED'.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for opted that I've seen before include "Depot (anag.)" , "Made choice, selected" , "Decided as in 10 Across" , "Selected from depot" , "Plumped (for)" .)

I've seen this clue in The Mirror.

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