I think the answer is B> opposes the effects of the sympathetic division
Answer:
<em><u>A. Neither the subjects nor the researchers can bias the results.</u></em>
Explanation:
As described, a double- blind study is one in which the researcher and his study does not know the person receiving the actual treatment.
Researchers can be bias in their studies as they seek to establish and fine tune results in the way the best favors them. A double-blind study helps to bridge this gap to prevent bias that might be introduced into an experimental set up or while interpreting results.
<span>B. The sun shines more directly at the equator than at the poles</span>
<span>This principle, or thought process, is that in basic sports fitness programs, all athletes training to continuously improve must always work harder an harder as their bodies become more used to their existing work out routines.</span>
Option D is correct, I believe that option A is wrong because in meosis 1 sister chromatids are together option B is wrong because homologous chromosomes are in meiosis 1 not 2 option C is wrong because 4 sex cells are produced in the process of meosis 2