Board composition

The important word here is INDEPENDENT. So the other half could be executive but there could be NEDs who don't meet independence criteria. "The board [of directors]" is the management body: "The board should include an appropriate combination of executive and non-executive (and, in particular, independent non-executive) directors, such that no one individual or small group of individuals dominates the board’s decision-making." So, absolutely, the "C-level" executives will be on the board of directors.

yes professor same doubt

moreover professor, i had another doubt related to this. Can nomination committee members nominate themselves to the board?

The Companies Act gives directors powers to fulfil their duties/obligations - this includes setting up the committees in the first place. The nomination committee leads the process of appointments but the board puts the names of the nominees on the ballots that the members vote on. All directors should be subject to annual re-election. So if shareholders don't like them they can simply not reappointment them! (Or sell their shares!) Please remember this is an AUDIT exam - corporate governance is part of the "backdrop" to the audit of listed entities - in the UK though, of the c. 2 million limited companies only c. 2,000 are listed i.e. 0.1% (!!!)

"Non-executive directors should have sufficient time to meet their board responsibilities. They should provide constructive challenge, strategic guidance, offer specialist advice and hold management (i.e. executives responsible for the day-to-day) to account." In some jurisdictions, "the board" has two-tiers - an executive/management board and a supervisory board. But in the UK and US, for example, the board is "one-tier". This is not examinable in AA - you will learn more about corporate governance in Strategic Business Leader.