Which of the following additional perils is covered under both the basic form and broad form dwelling policies?

The peril of internal explosion is covered under both the basic form and broad form dwelling policies, making it the correct answer. Basic policies generally provide coverage for specific perils that are listed, and internal explosions are included in this foundational coverage. The broad form extends this coverage to include a wider range of perils but retains internal explosion as a common peril that both policy forms cover.

Other perils mentioned, such as the weight of ice, snow, or sleet, freezing of plumbing, heating, or air conditioning systems, and falling objects, are specific to the coverage provided by the broad form policy. These perils are not included in the basic form policy but require the broader coverage to be applicable, highlighting the enhanced protections available in the broader coverage options.

Understanding the distinctions between what is covered in basic versus broad policies allows policyholders to make informed decisions about the level of risk they wish to insure, ensuring they have adequate protection for various potential hazards.