<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>
It has an incorrect conjunction adverb. Hope this helped!
Not enough info:( sorry summit again with more.