Sayaka was recently promoted into marketing at a large manufacturing company. A main focus of her position is to prepare materials for trade shows where the company's products are displayed. She will be working at her first trade show later this month. Her mentor pointed out that while the materials are important, her long-term success will depend more on her ability to build relationships with customer representatives and other vendors at the event. In other words, Sayaka's mentor could be best described as encouraging her to develop her Formal network Interpersonal network 8 0 Grapevine or Informal network External network