Answer:
The answer is: A) formed a valid contract because Rachel's outward expressions showed the formation of a contract.
Explanation:
A valid contract is binding and enforceable agreement, where all parties are legally bound to perform the contract.
Probably the most important part of a contract is the existence of an offer and acceptance. Once a valid offer is accepted, it binds the parties into a valid contract.
In this case, Rachel accepted Julius´s offer to buy her boat, so an offer and acceptance exists.