Correct Answer: Both assertions and reasons are correct, and the reason is the correct explanation of the assertion.

Solution : The correct answer is (a) Both assertions and reasons are correct, and the reason is the correct explanation of the assertion.

The assertion that the principle of "Esprit de Corps" fosters a positive work culture is correct. "Esprit de Corps" refers to a sense of unity, enthusiasm, and devotion to a common cause among members of a group, often in the context of a workplace. This indeed contributes to a positive work culture.

The reason provided, stating that it promotes unity and a sense of belonging among employees, is also correct. Esprit de Corps indeed fosters a sense of belonging and encourages teamwork among employees, which are vital elements for a positive work culture.

Both the assertion and the reason are correct, and the reason appropriately explains why "Esprit de Corps" contributes to a positive work culture.