According to the Administrative Tribunal Act 1985, the Central Administrative Tribunal is responsible for settling disputes and complaints related to the service of individuals appointed to public services and posts in connection with the affairs of the Union, excluding members of the defense forces.

Option 1 is the correct answer because it accurately reflects the provisions of the Administrative Tribunal Act 1985. It states that the Central Administrative Tribunal has jurisdiction over disputes and complaints regarding the service of individuals in public services and posts affiliated with the affairs of the Union, except for members of the defense forces.

Option 2 is incorrect because the act does not cover officials and servants of the Supreme Court or any High Courts.

Option 3 is incorrect because the act does not include members of the Secretarial staff of the Parliament or any state legislatures.

Option 4 is incorrect because the act specifically excludes members of the defense forces from the jurisdiction of the Central Administrative Tribunal.

Therefore, the correct answer is Option 1.