The answer is B. Scientist repeat the experiments in order to prevent bias.
Brainlest answer is always appreciated!
I think an example would be a bee pollenating
<span>Cytokines are tiny protein hormones that normalize immune
responses and facilitate cell-to-cell communication. The disproportionately
high levels of cytokines released by T cells enter the bloodstream and increase
the number of symptoms, including fever, biliousness, vomiting, diarrhea, and
sometimes tremor. Superantigens which includes staphylococcal toxins that may
lead to food poisoning and toxic shock syndrome.</span>
