"She saved money diligently so that she could afford to travel abroad." This is a-

• "She saved money diligently so that she could afford to travel abroad."
→ The sentence is a - Complex Sentence.

• Complex Sentence:
- যে sentence এ একটি Principal clause এবং এক বা একাধিক Subordinate clause থাকে, তাকে Complex sentence বলে।
- Complex sentence এর subordinate clause এর শুরুতে সাধারণত if, though, although, as, because, since, so that, that, until, till, unless, when, why, who, which, where, how, before, after, whether, while বসে।
- Complex Sentence- এ একটি Independent Clause এবং এক বা একাধিক Dependent Clause থাকে।

• প্রদত্ত বাক্যটিতে "so that she could afford to travel abroad." হলো Subordinate clause এবং "She saved money diligently" হলো Principal clause.
- অর্থাৎ, প্রদত্ত বাক্যটি হলো Complex Sentence.