Concept:A complex sentence has one independent clause (a complete sentence) and at least one subordinate clause (which cannot stand alone).
Explanation:First, understand the two parts: an independent clause can stand alone (e.g., "She sings"). A subordinate clause depends on the main clause and often starts with words like "who," "because," or "when."
Now, examine each option:
- Option A: "They are very wise people" – only one clause, a simple sentence.
- Option B: "You know me well" – one independent clause, simple sentence.
- Option C: "She does not sing" – one independent clause, simple sentence.
- Option D: "One who does not love one’s country is a wretched person" – here, "One is a wretched person" is the independent clause. The part "who does not love one’s country" is a subordinate clause because it depends on the noun "one" and cannot stand alone. Since the sentence has both an independent and a subordinate clause, it is a complex sentence.
Thus, only option D is correct.
Answer:Option 4: One who does not love one’s country is a wretched person