Step 1: Constitutional condition.
Article 85 stipulates that not more than six months shall elapse between two sessions.
Step 2: Logical deduction.
In a 12-month period, the six-month cap implies at least two sessions are necessary (typically Budget, Monsoon, Winter—though names are conventional).
Step 3: Conclude.
\[
\boxed{\text{Two times (Option B).}}
\]