Identify the complex sentence from the options below.

• The correct answer is - The doctor came after the patient had died.• Complex Sentence বা জটিল বাক্য:- Complex Sentence বা জটিল বাক্যেতে সাধারণত দুটি Clause থাকে। এর একটি Independent clause, অপরটি Subordinate clause.- Subordinate clause বাক্যের Object হিসেবে কাজ করে।- Subordinate clause এর শুরুতে সাধারণত if, lest, though, although, as, because, since, so that, that, until, til, unless, when, why, how, before, after, whether, while বসে।• Example sentence:1. She cooked dinner while I set the table.2. Though he was poor, he was honest.• উল্লিখিত বাকি অপশনগুলো,ক) She loves to read, and he enjoys watching movies.- Compound Sentence.খ) I wanted to go outside, but it was too cold.- Compound Sentence.ঘ) The sun was shining brightly, so we decided to go to the beach.- Compound Sentence.• Compound Sentence গঠনের শর্ত হচ্ছে -- বাক্যে একের অধিক Principal Clause থাকবে।- বাক্যে এক বা একাধিক Coordinating Conjunction থাকবে।- and, or, but, both, fewer than, neither, and, not only.... but also, no less than, neither... nor, either... or, otherwise, still, yet, else, nevertheless, on the contrary, only, so, therefore, consequently, for- ইত্যাদি Coordinating Conjunction দ্বারা Compound Sentence গঠিত হয়।Source: A Passage to the English Language, S. M. Zakir Hussain.