Explanation:

"In this data is transmitted by propagation of light in free space allowing optical connectivity." - This statement is correct. Free space optical communication involves the transmission of data using light through free space.

"It is a Line of Sight (LOS) technology." - This statement is correct. Free space optical communication typically requires a clear line of sight between the transmitter and receiver.

"There is a need for spectrum license and frequency coordination between users." - This statement is incorrect. Free space optical communication operates in the optical spectrum (using light), and it does not require spectrum licenses or frequency coordination in the same way as radio frequency communication technologies do. Therefore, the correct option is 2, not 3.