Direction: In the following questions out of the four alternatives, choose the one which can be substituted for the  given words / phrase. 
- 
					 Occurring at night
- 
                        - nightly
- dark
- neurotic
- nocturnal
 
Correct Option: D
nocturnal (Adj.) : active at night 
nightly (Adj.) : happening every night 
dark (Adj.) : with no or little light 
neurotic (Adj.) : caused by or suffering from a mental illness with strong feelings of fear and worry
 
	