Which conjunction properly introduces the reason in this sentence: '______ representative government requires informed citizens, the report emphasizes education.'?
答案解析
**Core concept**: Grammar - causal conjunction usage.
**Analysis**: 'Because' (B) correctly establishes causation between informed citizens and government.
- **A/D** introduce contrast.
- **C** sets a conditional exception.
**Key point**: 'Because' directly expresses the cause-effect relationship.
正确答案：B