"They were tired but they decided to keep hiking." This is a -

• "They were tired but they decided to keep hiking."" This is a - Compound Sentence.

Compound Sentence :
- যে বাক্যে একাধিক Principal Clause 'Coordinating Conjunction' দ্বারা যুক্ত থাকে তাকে Compound Sentence বলে।
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, nevertheless, on the contrary, while, whereas, only, so, therefore, consequently, for- ইত্যাদি Coordinating Conjunction দ্বারা Compound Sentence গঠিত হয়।

- The dog barked loudly, so the neighbors complained. বাক্যটিতে 'so' Coordinating Conjunction রয়েছে এবং দুইটি Prinipal Sentence কে 'so' Coordinating Conjunction দ্বারা যুক্ত করা হয়েছে। তাই বাক্যটি একটি Compound Sentence.

More Examples of Compound Sentence:
- The project was challenging, yet we completed it ahead of schedule and under budget.
- I wanted to go to the party, but I had to finish my homework.

Source: A Passage to the English Language, S. M. Zakir Hussain