He went to — hospital because he had — heart attack.

✅ কেন সঠিক: ‘Go to hospital’ (as a patient) takes no article in British usage, and ‘have a heart attack’ needs the indefinite article ‘a’ because ‘heart’ begins with a consonant sound.

❌ অন্য অপশন: ‘an’ cannot be used before ‘heart’ (consonant sound). Using ‘a’ or ‘the’ before ‘hospital’ changes the sense to a particular building. Option (গ) leaves out the article before ‘heart attack’.

💡 মনে রাখুন: go to school/church/hospital/bed (for its purpose) — no article; an illness like ‘a heart attack’, ‘a cold’, ‘a headache’ takes ‘a’.

📖 শব্দার্থ: বাক্যার্থ: তার হার্ট অ্যাটাক হওয়ায় সে হাসপাতালে গেল।