What is a legal requirement for shares to be allotted regarding their nominal value?

The correct response highlights the legal stipulation that shares cannot be issued at a discount to their nominal value. This means that when a company is issuing its shares, they must be sold for at least their stated nominal or par value. This regulation is intended to protect both the integrity of the company’s capital structure and the interests of existing shareholders, ensuring that the value of the company's shares is not diminished by issuing them at lower than their nominal value.

When it comes to the options provided, issuing shares at market value or at a premium may be permissible but are not legal requirements regarding share allotment. Similarly, while it is common for regulations to dictate a minimum threshold for share values in some jurisdictions, it is not universally mandated by law that such a threshold exists across all cases. The prohibition on issuing shares at a discount specifically protects the financial integrity of the company and the interests of its stakeholders.