The Constitution of India lays down that the two Houses of Parliament must be summoned at least – (1) four times a year (2) thrice a year (3) twice a year (4) once a year
(3) twice a year Explanation: The period during which the House meets to conduct its business is called a session. The Constitution empowers the President to summon each House at such intervals that there should not be more than 6 month's gap between the two sessions. Hence the Parliament must meet at least twice a year.