Answer:
b. Ralph is bound on the basis of Wanda's apparent authority.
Step-by-step explanation:
Since in the question it is mentioned that wanda to hire nick for the managerial question but for that she wants to do certain pension commitments
Now After some years, nick sues ralph for the fulfill the pension commitments so here the ralph would be founded based on the authority of Wanda
So the option b is correct
And, the rest of the options would be incorrect