Answer: Invalid
Explanation: The case mentioned in the question is of invalid acceptance because it lacks communication between the actual corporate parties. Amy wants to sell industry plant to Baker Corporation but she did not send the offer to them instead Anastasia Anderson sends the acceptance for that offer.
The offer was originally for baker corporation but due to lack of communication between Amy and Baker Corporation the offer letter is accepted by Anastasia which was never supposed to happen. .Thus, this situation creates invalidity because the offer hasn't reached the correct party