The correct answer is Lateral Communication.

• Some of the most important types of direction in formal communication are
  • Downward
  • Upward
  • Horizontal or Lateral
  • Diagonal or Cross-wise
• Downward Communication
  • It occurs when information and messages flow down through an organization's formal chain of command or hierarchical structure.
  • It flows from a top-level to a low level in an organisation.
• Upward Communication
  • It is the process of information flowing from the lower levels of a hierarchy to the upper levels.
  • The function of upward communication is to send information, suggestions, complaints and grievances of the lower-level workers to the managers above.
• Horizontal or Lateral Communication
  • It involves the flow of messages between individuals and groups on the same level of an organization.
  • Functional managers operating at the same level, in different departments, through their communication, present a good example of lateral communication.
  • The main use of this dimension of communication is to maintain coordination and review activities assigned to various subordinates.
• Diagonal or Cross-wise Communication
  • It takes place when people working at the same level interact with those working at a higher or lower level of organisational hierarchy and across the boundaries of their reporting relationships.