Select the nearest meaning for the word 'transmission' used in passage below

the beginning of the community radio in india can be traced back to the decade of 1990s but its TRANSMISSION and use on a large scale could be possible only after the implementation of the community policy 2006 of the government of india.

any one

1 implementation
2 beginning
3 broadcasting
4 enriching



3 broadcasting is the correct answer as I thinks it fits in this para.