Scientific evidence is most likely to be consistent if it is based on data from
random samples.
uncontrolled experiments.
biased experimental designs.
small data samples

Random samples

Scientific evidence is most likely to be consistent if it is based on data from random samples. This is because random sampling diminishes the risk of allowing bias into the evidence. An unbiased random sample is vital for acquiring scientific information. If a large enough number of samples is drawn, the average sample is more likely to represent the population.

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.