Which of the following items would be covered under the peril of "theft" in a homeowner's policy?

Jewelry stolen from a locked home is covered under the peril of "theft" in a homeowner's policy because most standard homeowner's insurance plans include protection against theft, providing coverage for personal belongings that are stolen from within the residence. In this case, the jewelry being kept in a locked home indicates a reasonable expectation of security, making it the type of personal property that the policy is designed to protect against theft.

The other items presented do not qualify for theft coverage under typical homeowner's policies. A personal vehicle parked on the premises may be covered under an auto insurance policy rather than a homeowner's policy. Construction materials at an unoccupied site or equipment used for construction purposes generally fall under commercial insurance or specific builder's risk policies, rather than standard homeowner coverage, as they are often associated with business activities rather than personal property within the home.