Step 1: Understanding the Concept:
The question asks to identify the plays written by the modern Hindi playwright Mohan Rakesh from the given list.
Step 2: Detailed Explanation:
- (A) Adhe Adhoore: This is one of Mohan Rakesh's most famous and influential plays, dealing with middle-class disillusionment.
- (B) Andha Yug: This play was written by Dharamvir Bharati.
- (C) Lehron Ke Rajhansh: This is another major historical play by Mohan Rakesh, about Nanda and Sundari.
- (D) Khamosh Adalat Jaari hai: This is the Hindi translation of Vijay Tendulkar's Marathi play Shantata! Court Chalu Aahe.
Therefore, only (A) and (C) are plays by Mohan Rakesh.
Step 3: Final Answer:
The plays written by Mohan Rakesh are Adhe Adhoore and Lehron Ke Rajhansh.