Daughters benefit getting outside for walk in the park (6)
I believe the answer is:
doddle
'walk in the park' is the definition.
The definition suggests a singular noun which matches the answer.
'daughters benefit getting outside' is the wordplay.
'daughters' becomes 'dd' (a genealogical abbreviation for daughter repeated).
'benefit' becomes 'dole' (informal term for a state benefits).
'getting outside' indicates putting letters inside.
'dd' going within 'dole' is 'DODDLE'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for doddle that I've seen before include "Easy task (informal)" , "Snip" , "Something easily done" , "gift" , "pushover" .)