The correct option is B inalienable
Option A: 'Inalienable' refers to something that cannot be transferred, denied or taken away. It relates to the sentence, as the rights of freedom and equality cannot be taken away from any person. Hence A is the correct option.
Option B: 'Inscrutable' means 'impossible to understand or interpret'. It isn't relevant here, as human rights are not impossible to understand. Hence B is incorrect.
Option C: 'Incalculable' means 'not able to be calculated or estimated'. It is irrelevant to the statement, as rights have no relation to measurement. Hence C is incorrect.
Option D: The word 'institutional' means 'established as a convention or norm'. It does not refer to the rights. Rights are not a notion or norm. Hence D is incorrect.