The answers are:
1. Option (a) All of these. When a written contract is made, it creates a legally binding agreement. If the seller breaches the contract by selling the books to someone else, the buyer can sue for damages (option b), cancel the contract (option c), and/or sue to obtain cover (option d).
2. Option (c) There was a unilateral mistake on my part and this contract cannot be rescinded. In this scenario, there was a mistake on the part of the seller regarding the value of the watch, but the buyer was aware of the true value and accepted the offer. Therefore, the mistake was unilateral, or one-sided, and the contract cannot be rescinded.
3. Option (d) The venue is improper. Mr. Ellison may argue that the venue, or location of the lawsuit, is improper if the case is not being brought in the correct court or jurisdiction. However, this answer does not specifically address the issue of standing, which is whether the person bringing the lawsuit has a legal right to do so, or whether the case needs to be brought in federal court.