Answer :
Answer:
(b) When irrelevant attributes have been removed from the data.
Explanation:
A nearest neighbor approach -
It refers to the method of searching where the nearest point from the given set can be determined with respect to some specific point , is referred to as the nearest neighbor approach .
The method is used for the purpose of finding soe data in order to replace , edit , remove or add some data .
Hence , from the given question ,
The correct answer about nearest neighbor approach is b.