<span>Mrs. Brandeis' friendly personality helps her to succeed in business. Because she listens to the salesmen's troubles, they like her. I think this is the key ter succeeding in business that she is friendly, sociable and with an open mind so discusses things with her salesmen and is open to entertain their suggestions.</span>
Please refer to the attachment for the explanation and answers to your questions.
Workers and owners would cooperate for profit
I don’t want to get this wrong for you but a or b I’ll narrow it down to that but if anything I would say b because if you think about it theme are mostly heart warming