Answer:
The answer is: Yes, Allstate was liable
Step-by-step explanation:
An implied contract differs from an express contract in that the way the parties act, rather than their words, defines the terms of the contract. Implied contracts exist if one party furnishes a service or property and expects to receive something in return. The other party must know (or should know) about the expectation of something in return and has to have a chance to reject the contract.
Ralph expected to get home insurance because he paid for it, and Allstate had the chance to cancel the home insurance policy but they didn't.