The quarterly ratings illustrate a boost in viewership.
The sentence "Local television stations are owned by larger news organizations" is written in passive voice.
The sentence written in passive voice is: "Local television stations are owned by larger news organizations." To identify the passive voice, we should look for the subject receiving the action of the verb rather than performing the action itself. In this case, the subject "local television stations" is being acted upon by the verb "are owned." This makes it a passive construction.