Another way to crack a synonym question is to break the word into recognizable parts or recall it from a familiar context. "Furlough" comes from an old Dutch and German root meaning "permission," and in English usage it survives almost exclusively in the phrase "granted furlough," typically used for soldiers or government employees taking sanctioned time off duty.
Using this contextual memory, we scan the options for anything related to permission, leave, or time off: only "Soldiers holiday" fits, since a holiday is essentially a sanctioned break, and pairing it with "soldiers" mirrors the military association furlough carries.
The other three options, wild growth, wooden plough, and till, are all tied to farming and land, a field that shares no etymological or contextual link with furlough. This confirms they are distractors meant to test whether a candidate confuses furlough with an unrelated rustic term.
Let's summarize:
Anchoring a word to its most common real world usage, here military leave, is often faster than relying purely on dictionary definitions.