A sample of hair without the follicle
The bones that make up our arms are pretty similar to those of a turkey's wings. ... We can tell tibiae are homologous in humans, monkeys, tortoises, and turkeys because they always connect with the upper leg bone (femur) and the bones of the foot, and similar muscles connect them to other bones.
Answer:
Reproducible
Explanation:
A conclusion of an experiment is accepted by scientific community when the same results can be obtained by repetition of experiment. Reproducible nature of results makes them scientifically acceptable. If the same result of an experiment cannot be obtained by some other scientists, the conclusion is considered to be affected by handling errors and other chance factors.
The answer is B. We don't always have exact proof but our observations tell us more than we already know.