<span>Religious issues ,because they challenged the catholic Church and the Pope.</span>
B is not the answer..... the right answer is C- They migrated over land from Africa over the last 80,000 years.<span>
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<span>, as measured by reduced length of stay. I believe in this case her response is </span><span>completely randomized design.
In </span><span>completely randomized design, the subject would be assigned treatments, vaccine and placebon in a completely random order, which make it become easiest in the term of analysis and convenience. </span>