Which of the following bodies does not/do not find mention in the Constitution?<br/>1. National Development Council<br/>2. Planning Commission<br/>3. Zonal Councils<br/><br/>Select the correct answer using the codes given below:

1. National Development Council — It was created by an executive resolution in 1952. It is extra-constitutional and not mentioned in the Constitution.
Verdict: Correct.

2. Planning Commission — It was set up by a Cabinet/executive resolution in 1950. It is extra-constitutional and not mentioned in the Constitution.
Verdict: Correct.

3. Zonal Councils — They were created under the States Reorganisation Act, 1956. They are statutory bodies, not constitutional bodies, and do not find mention in the Constitution.
Verdict: Correct.

Therefore, 1, 2 and 3 do not find mention in the Constitution, so the correct answer is (d). My earlier conclusion was a factual error.