Carlo wants to survey the jhs194to find out what their favorite ice cream flavor is. he decides to ask his 9th period math class if they enjoy vanilla ice cream, chocolate ice cream, strawberry ice cream, or "another" flavor the best. given this information, what choice below is the best reason why carlo's sample was either random or biased? a) carlo's sample was unbiased because he gave the students the opportunity to choose "other." b) carlo's sample was unbiased because he asked middle school students. c) carlo's sample was biased because he did not ask enough people. d) carlo's sample was biased because he did not give students enough choices