Step 1: Understand the task.
We must pick which programmes are currently running for primary education in Chhattisgarh: (J) FLN, (K) RTE, (L) Operation Blackboard, (M) DPEP.
Step 2: Check FLN (J).
Foundational Literacy and Numeracy is part of the NIPUN Bharat mission under NEP 2020 and is active today, so J counts.
Step 3: Check RTE (K).
The Right to Education Act, 2009 is a live legal mandate for ages 6 to 14, so K counts.
Step 4: Check Operation Blackboard (L).
Launched in 1987, it has been discontinued and merged into later schemes, so L does not count.
Step 5: Check DPEP (M).
The District Primary Education Programme of 1994 was phased out after Sarva Shiksha Abhiyan, so M does not count.
Step 6: Select the option.
Only J and K are currently conducted, which is option C.
\[ \boxed{\text{J and K only}} \]