Which Homeowners form covers both the dwelling and the personal property on an open-perils basis?

解析

The comprehensive form applies open perils to the dwelling and to contents, so the insurer must name an exclusion in order to deny either kind of loss. The HO-3 answer is the common trap: it writes the dwelling open perils but leaves contents on the broad list of named perils, and the HO-8 is the modified form for an older home.