Indian Politics
The preamble says that the state in India will assure the dignity of the individual. The constitution seeks to achieve this object by guaranteeing

just and humane conditions of work to each individual
equal wages for equal work to each individual irrespective of sex
the right to adequate means of livelihood to each individual
equal fundamental rights to each citizen

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Indian Politics
The parliament can legislate on the subject in the state list

if the Rajya Sabha passes a resolution by two-third of its to legislate on a state matter in the nat
None of these
if the President issues an order authorizing it to do so
if the Supreme Court of India gives authority to the Parliament of India in this regard

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