Step 1: Understand the question.
We have to find which of the listed tasks are given to the Panchayats by the Constitution.
Step 2: Recall the source.
Article 243G of the Constitution lets states give Panchayats the power to prepare plans for economic development and social justice. Article 243H allows them to levy and collect taxes, duties, tolls and fees.
Step 3: Check statement A.
Planning for economic development is a listed Panchayat function. So A is correct.
Step 4: Check statement B.
Panchayats are local self-government bodies. Making laws belongs to the state legislature and Parliament, not to the Panchayats. So B is wrong.
Step 5: Check statement C.
Schemes for social justice are part of the Panchayat tasks. So C is correct.
Step 6: Check statement D.
Taxes, duties, tolls and fees can be levied by Panchayats as per state law. So D is correct.
Step 7: Match with the options.
The correct group is A, C and D only, which is option 2.
Final Answer:
A, C and D are Panchayat functions and B is not, so option 2.
\[ \boxed{\text{Option 2: A, C and D only}} \]