A regulatory body working under MoEF for the release of transgenic crops is:

Options

A. NBPGR
B. NSC
C. NIPGR
D. GEAC

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a regulatory body that operates under the Ministry of Environment and Forest (MoEF) in India, specifically concerning the release of transgenic crops.

2. **Identify Transgenic Crops**: Transgenic crops are genetically modified organisms (GMOs) that have been altered using biotechnology to express desired traits. The regulation of these crops is crucial for environmental safety and public health.

3. **Review the Options**: The options provided are:
- NBPGR (National Bureau of Plant Genetic Resources)
- NSC (National Seed Corporation)
- NIPGR (National Institute of Plant Genome Research)
- GEAC (Genetic Engineering Appraisal Committee)

4. **Analyze Each Option**:
- **NBPGR**: This body is involved in the conservation and management of plant genetic resources but does not specifically regulate transgenic crops under MoEF.
- **NSC**: This organization focuses on seed production and distribution, operating under the Department of Agriculture, not MoEF.
- **NIPGR**: This institute is involved in plant genome research but is not a regulatory body under MoEF.
- **GEAC**: This is the Genetic Engineering Appraisal Committee, which is specifically tasked with the appraisal and approval of genetically modified organisms, including transgenic crops, under the MoEF.

5. **Select the Correct Answer**: Based on the analysis, the correct answer is **GEAC (Genetic Engineering Appraisal Committee)**, as it is the only body among the options that operates under the Ministry of Environment and Forest and is responsible for the release of transgenic crops.

### Final Answer:
The regulatory body working under MoEF for the release of transgenic crops is **GEAC (Genetic Engineering Appraisal Committee)**.