Answer:
Yes, because Henry had authority to sell the horse
Step-by-step explanation:
In the given scenario Henry had apparent authority to sell the horse.
Apparent authority is the ability of an agent to act on behalf of a principal even though this is not clearly stated out. It is as a result of a third party assuming the agent has such power.
James rightly assumed Henry had the power to sell the horse.
So the sale of the horse is binding on Eleonore.