करणरूपी वाक्य ओळखा.

The correct answer is Option A (Tushar abhyas karto.).

Key Points:
• Karanrupi Vakya (करणरूपी वाक्य) is an affirmative sentence (होकारार्थी वाक्य) stating that an action takes place positively.
• Akaranrupi Vakya (अकरणरूपी वाक्य) is a negative sentence (नकारार्थी वाक्य).
• Option (1): 'तुषार अभ्यास करतो.' (Tushar studies) is a simple affirmative statement (होकारार्थी / करणरूपी).
• Option (2) & (4): Interrogative sentences (प्रश्नार्थी).
• Option (3): Negative sentence ('करीत नाही' - नकारार्थी / अकरणरूपी).
• Hence, Option (1) is the correct Karanrupi sentence.
• Key Takeaway: Karanrupi vakya (करणरूपी वाक्य) simply means an affirmative (होकारार्थी) sentence.