They are trying to change the subject
The sulfate ion formula is SO42-
Among which solutions I've to tell?
As you didn't gave options...
What table? you didn’t attach anything?
Answer:
The answer for "which one is bridge animal?" is 4. I think it is i and ii not ii and ii.
The answer for the homologous organ is forelimb of seal.
The vestigial organ is appendix.