The official termination of each session of a House of Assembly is known as

Step 1: Analyze the question The question asks for the term used for the official end of a session of a legislature (House of Assembly). It does not ask about the end of the legislature's whole life.

Step 2: Explain the concepts

• Adjournment: A temporary break in a sitting, such as ending for the day or for a few days. The session continues afterward.
• Closure: A rule used in debate to end discussion on a motion so that a vote can be taken.
• Dissolution: The end of the life of the whole legislature, which is followed by a new election. It is not the end of a session.
• Prorogation: The formal ending of a session of the legislature by the Governor (or the President at the national level), without dissolving the House. The House then meets again in a new session.
• Summon: To call members to meet. This is the opposite of ending a session.

Step 3: Apply to the question The "official termination of each session" is done by the Governor and does not end the House itself. That is prorogation.

Step 4: Answer The correct option is D. prorogation.

Tip: Remember the sequence Summon → Session → Prorogue → Dissolve. Summon starts a session, prorogation ends it, and dissolution ends the entire House. Adjournment is just a short pause.