Which of the following is a common inclusion in endorsements?

Broad theft coverage is a common inclusion in endorsements because it enhances the standard coverage of a policy to provide specific protections against theft, which may not be fully covered under a typical insurance policy. Endorsements are alterations or additions to the original insurance policy that modify or expand coverage. In the case of broad theft coverage, it expands the circumstances under which theft-related claims can be made, thereby offering policyholders greater security and peace of mind regarding their property.

The other options, while they may relate to various aspects of insurance, do not frequently appear as common endorsements. Weather damage and power failure might be considered under standard coverage in certain contexts, but they tend not to be specialized endorsements compared to broad theft coverage. Nuclear incidents, similarly, are usually explicitly excluded from most standard insurance policies, making it highly unlikely for them to be included in endorsements. Thus, broad theft coverage stands out as a significant and common addition offered to policyholders seeking more comprehensive protection against theft-related losses.