Out of public's interest in the details of and conflicts in other people's lives has grown a booming market for "reality television shows that are bringing "regular people into television screen with increasing frequency.
a) Same
b) other people's lives has grown a booming market for "reality television shows that is bringing

Please suggest what is the subject for "that" in the sentence.. is it shows or market
If it is market how come market bring people onto television screen..