An opinion poll contacts 1101 adults and asks them, " which political party do you think has better ideas for leading the country in the 21st century? " in all, 613 of the 1101 say, " the democrats." the sample in this setting is
a. the 613 people who chose the democrats.
b. the 1101 people interviewed.
c. all 235 million adults in the united states.
d. none of the above.