Answer:
Bob
Step-by-step explanation:
Contract means written agreement or a spoken agreement between two parties for the breach of which the law provides a remedy. It is a commitment or an arrangement between two parties concerning selling, buying, employment, or tenancy, etc. between them.
In the context, when Bob sues Edna for revoking the offer they made earlier, the judgement was in favor of Bob because after the agreement made, the seller cannot revoke or breach the agreement after the buyer had effectively accepted the offer.