Accuse the one that provided the transport (4)
I believe the answer is:
taxi
'the transport' is the definition.
(taxi is a kind of transport)
'accuse the one that' is the wordplay.
I cannot really see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
'one' could be 'i' (Roman numeral) and 'i' is present in the answer.
The remaining letters 'ax' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'provided' acts as a link.
Can you help me to learn more?
(Other definitions for taxi that I've seen before include "Motor vehicle by rank?" , "move on ground before take-off" , "(Of a plane) move slowly on the ground" , "US currency" , "Hackney cab" .)