The Answer is A. I hope this helps you out.
The Triple Entente: <span>Britain, France, Russia
</span><span>The Triple Alliance: </span>Germany, Austria-Hungary, Italy. (However, Italy's membership was meaningless and Italy fought alongside the Entente from April 1915)
<span>The Ottoman Empire, which fought alongside the Central Powers (from September 1914 on, was not a member of either.
</span><span>The US, which entered the war on the side of the Triple Entente was also not a member of either.</span>
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! ;)
There is no description but you may dm me the description so I can answer your question :)