Four scientists investigated passive smoking. The table below shows the number of people each scientist studied from each group.

Which scientist is likely to get the most reliable results?
Olga
Harry
Peter
Mary

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d