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The correct answer to the question is option 1, which is Rasi Seeds Ltd. The Genetic Engineering Approval Committee (GEAC) has given permission to Rasi Seeds Ltd to conduct large-scale trials of the RCH-2 variety of Bt Cotton.
It is important to note that Bt Cotton refers to cotton plants that have been genetically modified to produce a toxin called Bacillus thuringiensis (Bt), which is harmful to certain pests. The purpose of these trials is to determine the effectiveness and safety of the RCH-2 variety of Bt Cotton on a larger scale.
Option 2, Seen Penn Seeds Ltd, and option 3, Katja Riemann Seeds Ltd, are not the correct answers as they are not mentioned in the question as companies permitted by the GEAC.
Option 4 states that none of the mentioned companies have been permitted by the GEAC, which is incorrect based on the information provided in the question.
Therefore, the correct answer is option 1, Rasi Seeds Ltd.