Final answer:
Theft and vandalism are typically not covered by insurance policies if a building has been vacant for more than 60 days, which includes the 75-day period of vacancy mentioned in the question. Fire and windstorm coverage are usually still valid regardless of the building's occupancy status.
Step-by-step explanation:
The question pertains to insurance coverage for a building that has been vacant for 75 days. Typically, insurance policies have special provisions regarding vacancy because a building that is uninhabited for a substantial amount of time is considered a greater risk for certain types of damage. In many policies, certain perils may not be covered if the building has been vacant for more than a specified period, typically 60 days.
In this scenario, when a building has been vacant for 75 consecutive days, certain perils are often not covered by insurance policies. Generally, theft, vandalism, and sometimes glass breakage, water damage, and others are not covered if a building has been unoccupied for the predefined period. However, perils like fire and windstorm are often still covered, because these can happen irrespective of the building's occupancy status.
Given the options provided: a. Fire b. Theft c. Vandalism d. Windstorm, the perils that would not be covered due to the building's 75-day vacancy would likely be theft and vandalism.