A bunch of the same critters. Nah I am just kidding, you will find a lack of resources because if they are all the same animals they will all eat the same thing. I hope this helps you.
Answer: A diet rich in calcium and vitamin D supplements.
Some examples off calcium rich foods include Cheese; Yogurt; Sardines and Canned Salmon; Beans and Lentils; Almonds; Whey Protein; Some Leafy Green.
Yes, your ear canal is connected to your brain.
The answer is to your question my friend is D.
Though all choices protect your organs the most important would be your bones.