Correct to pursue delivery of what they're entitled to (10)
I believe the answer is:
birthright
'what they're entitled to' is the definition.
The definition suggests an adverb but the answer is not.
'correct to pursue delivery' is the wordplay.
'correct' becomes 'right' (right can mean correct).
'to pursue' is a charade indicator (letters next to each other).
'delivery' becomes 'birth' (the delivery of a baby).
'right' put after 'birth' is 'BIRTHRIGHT'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for birthright that I've seen before include "Something possessed from beginning of life" , "inheritance" , "entitlement" , "Esau sold his" , "Privilege" .)