The primary distinction between modern communism and socialism is that socialism allows for some private ownership of property and businesses. The communism on the other hand has the government holds all properties.
The answer to your question would be choice D.
When you say "diversity" I think of many things. So I have many answers:
1. People. Different people farming, means different plants and animals
2. Planting Crops. Planting different crops can prevent soil erosion and or soil exhaustion.
3. On the market. Different crops and meats on the market provides consumers with different products and nutrients they may need.
Idk if this helps, there wasn't much detail. Hope it helps! ;)
The correct answer for plato is tank man and media!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!