Statement :
Many people have encroached should take immediate steps to remove all unauthorized
Course of action :
I.The Municipal corporation has advised all the govt. hospitals to store adequate supply of malaria drugs
II. All the encroached should immediately be put behind bars and also be slapped with a hefty fine.

Second is the square of the first number.
As, 11² = 121
Similarly, 25² = 625

In all except (c), second is attached with first.

In all pairs except (c), second is the related to first.

In all other groups, there is a gap of one letters as in the alphabet between second and third letters.

In all other groups, there is a gap of one letters as in the originaly alphabet between second and fourth letters.

In all other groups, the second and first letters are three steps ahead of third and second letters, respectively.

Except (d), all three are same because in those three options first and fourth, second and third are opposite letters.

Except 'PRU', all others having same gap but 'PRU' is not following the same rule.

'Swan' does not belong to that group because swan is a water bird while others are not water birds