which one does not belong

Question

padrastro

 

tio

 

primo

 

nino

 

 

**** i thought its padrastro since thats the one that is not related by blood but the key says im wrong

 

 

pls help

Answer 1

Padrastro is stepfather, tio is uncle, primo is cousin, and nino is boy.  The first 3 are relatives, although stepfather is not a blood relative.  Nino is just a boy, and since it is not specified as a relative, it is probably the one that does not belong in the set.

Answer 2

Padrastro, tio primo are relatives; but niño no