'Ir' 

A  rational 

B  resolute 

C  responsible 

D  All of a, b & c 

E  None of these 

Solution

Correct Answer: Option D

Solution: 

  Rational - মূলদ/যুক্তিসঙ্গত      Irrational - অমূলদ/অযৌক্তিক   
 Resolute - অটল    Irresolute - অটল নয় এমন 
  Responsible - দায়িত্ববান; দায়ী      Irresponsible - দায়িত্বহীন 

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