It’s (D) because it’s the only one that makes sense when you read it out loud
Answer:
semicolons
Explanation:
Since you're already separating the city and country with commas, you use semicolons to separate the pairs to make it less confusing and easy to understand.
Answer:
It’s the use of mechanical and grammatical accuracy in writing.
Mandela realised that his brothers and sisters were not free in their own country due to their colour. The freedom of everyone in his society was curtailed. He joined the African National Congress and fought for the freedom.