Explanation:

• The Union executive consists of the President, the Vice President, the Prime Minister, the council of ministers, and the attorney general of India.Parliamentary privileges are special rights, immunities, and exemptions enjoyed by the two Houses of Parliament, their committees, and their members.
• The Constitution has also extended parliamentary privileges to those persons who are entitled to speak and take part in the proceedings of a House of Parliament or any of its committees. These include the attorney general of India and Union ministers.
• Every minister and the attorney general of India have the right to speak and take part in the proceedings of either House, any joint sitting of both the Houses, and any committee of Parliament of which he is a member, without being entitled to vote. 
• Hence options 2 and 3 are correct.
• The parliamentary privileges do not extend to the President who is also an integral part of the Parliament. Article 361 of the Constitution provides for privileges for the President. Hence option 1 is not correct.