Final answer:
A personal umbrella liability policy provides excess liability coverage over underlying personal liability and does not provide errors and omissions coverage for an agency.
Step-by-step explanation:
A personal umbrella liability policy provides excess liability coverage over underlying personal liability. This means that it offers additional coverage beyond the primary insurance policies, such as homeowner's or auto insurance, in case their limits are exhausted. It does not provide errors and omissions coverage for an agency, which is a type of professional liability insurance that protects businesses from claims of negligence or mistakes in their professional services.