What is it called when a party announces that it cannot or will not perform its duties under a contract prior to the time of performance?

Darian offers to pay Ezri $6,000 for Ezri’s car, provided that Darian receives that much from an uncle’s estate, which is currently being probated. Darian expects to know the amount of the bequest within a week or so. In this case:

Which of the following is the best example of a habit?

Logan wrote a defamatory letter regarding Jamie which Logan mailed to Jamie, but did not show to anyone else. Logan has committed:

What is sometimes called “the supreme law of the land?”

What type of contractual damages are agreed to in advance of a breach?

Which of the following would be used to dismiss a case on the basis that the pleadings disclose that there are no material issues of fact to be resolved and that the moving party is entitled to judgment as a matter of law?

Which of the following contracts would most likely not need to be in writing to be enforceable?

A contract can be ended by mutual agreement of the parties.

What is it called when a party announces that it cannot or will not perform its duties under a contract prior to the time of performance?