Answer:
The answer is:
The Kincaids can sue David and Sandra Dess because they can be considered intended beneficiaries of the contract between them and Sirva.
Explanation:
Intended beneficiaries are third parties in a contract that can sue the promisor for breach of contract.
In the contract, David and Sandra agreed to fully disclose all information about the property. Under the terms of the contract, they agreed that Sirva and "other prospective buyers" could rely on their disclosures.