In which type of organization is team building likely to be most difficult? Why?

Matrix type.

Reporting is the main  problem because one is accountable for more than one persons.

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In which type of organization is team building likely to be most difficult? (Question45)

Matrix

The team members report to multiple managers in matrix organizations.

well, must agree with the team 

Matrix type because of reporting issues.

Matrix team building system.

Due to reporting to managers instead of reporting to one manager.