Answer:
4. Virtual
Step-by-step explanation:
Virtual team is made up of a group of people who are physically far from each other that uses computer technology in this case instant messaging to attain a common goal, in this case, marketing strategy for a new product line. They are called "virtual" because the are physically far away from each other and need the help of communication technology to communicate.
They are made up of individuals who work together in achieving a common goal from different geographical locations through the help of communication technology.