Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster. LOI : QTN :: VES : AJX :: AND : ?
FSI
The correct answer is option 4 i.e. FSI.
LOI : QTN

VES : AJX

Similarly, AND : ?

Select the most appropriate option to improve the bold part of the sentence.
The manager discussed on the issue in detail.