Answer: d) It would only survive in areas farther away from the vents at lower temperatures.
Explanation: Staphylothermus marinus is an anaerobic hetereotrophs that thrives in extremely hot environments with temperatures ranging from 85°c - 92°c when the nutrient concentration low and 98°c at a when the nutrient concentration is high thereby making them hyperthermophiles.
There are many things that can affect ocean currents. Particularly wind. Changes in temperature with air currents and tides affect it as well.
Make a test of experimental groups for flowers with warmer soil and another with regular soil and to be sure cold soil.
The answer is negative controls. These are groups where no phenomenon is probable. They ensure that there is no effect when there should be no effect. Where there are only two possible outcomes, e.g. positive or negative, if the treatment group and the negative control both produce a negative result, it can be concluded that the treatment had no effect. If the negative control group and the treatment group both yield a positive result, it can be inferred that a puzzling variable is involved in the occurrence under study, and the positive results are not only due to the treatment. In other examples, outcomes might be measured as lengths, times, percentages, and so forth.