উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।
ব্যাখ্যা ও সঠিক সমাধান
উত্তর:
topic sentence
The main idea of a paragraph lies in its topic sentence. It is often expressed directly or it can be implied. Main ideas are often found at the beginning of paragraphs. The first sentence often explains the subject being discussed in the passage.