The pattern followed is:- The first half letters of the word are arranged in alphabetical order. Similarly, the second half letters of the word are arranged in alphabetical order. The pattern for 'EQUALITY' is as shown:- The first four letters are arranged in alphabetical order EQUA - AEQU The last four letters are arranged in alphabetical order LITY - ILTY So, EQUALITY is written as AEQUILTY Similarly, for PERSONAL: The first four letters are arranged in alphabetical order PERS - EPRS The last four letters are arranged in alphabetical order ONAL - ALNO So, PERSONAL is written as EPRSALNO So, EQUALITY : AEQUILTY :: PERSONAL : EPRSALNO. Hence, the correct answer is "EPRSALNO".