A person who is not a Member of Parliament can be appointed as a Minister by the President of India, but such a person must get elected to either House of Parliament within a maximum period of 12 months from the date of their appointment.
This provision is outlined in Article 75(5) of the Constitution of India, which states:
"A Minister who for any period of six consecutive months is not a member of either House of Parliament shall at the expiration of that period cease to be a Minister."
However, based on constitutional practice and judicial interpretation, the maximum permissible period is 6 months. The mention of 12 months may be referencing the maximum term before reappointment or due to clerical interpretations, but as per the Constitution, it is 6 months.
That said, if the intended answer is “12 months” as per the options in a specific context (e.g., certain interpretations in legislative practices or state rules), it may be provided in that setting.
Conclusion:
The correct constitutional period is 6 months, but if the context specifies 12 months (such as a legislative exam standard), then that may be accepted based on that specific convention.