A. calcium and phosphorus
B. sodium and calcium
C. phosphorus and sodium
D. sulphur and phosphorus
Correct Answer: Option A
A. calcium and phosphorus
Explanation
The minerals that prevent the laying of thin-shelled eggs are calcium and phosphorus (Ca and P). Thin-shelled eggs in poultry nutrition laid as a result of the deficiency of calcium and phosphorus. Therefore, choice A is correct.