Explanation:

Thrice

Unlike other institutions, Parliament does not work throughout the year. Indian constitution specifies that ‘six months shall not intervene’ between the last sitting of one session and the first sitting of the next. This provision effectively ensures that Parliament meets at least twice a year. Over the years, parliamentary convention has evolved towards having three sessions in a year— the Budget (February to May), Monsoon (July to August/September) and Winter (November to December) sessions.