Body temperature varies over a 24-hour period, with a low point roughl

a conclusion should alwas be right . how can we assume that because of arificial increase if speed doesnt change then nautral correlaion of temperaure and speed of reaction is incorrect??? some exper please explain?? I would rather go with opion C???

Let us analyze the premises given in the stimulus:

i) Body temperature varies during the day.
ii) Speed of reaction varies proportionally with body temperature.
iii) Body temperature attains its 24 hour low between 4-5am.
iv) During this time, reaction speeds are also slowest.
v) Speed of reaction does not increase when body temperature is raised artificially.

From the above, we can infer that, while there is a correlation between body temperature and speed of reaction, there is no causal relationship of body temperature impacting speed of reaction. If this were causal, artificial increase in body temperature should have caused an automatic increase in speed of reaction as well.

Let us analyze the options:

(A) Low speeds of reaction cause low body temperature. We know body temperature does not cause speed of reaction. One of the alternatives is that the causal relationship is in reverse - it is the speed of reaction that causes body temperature to rise or fall. However, this is only a possibility and we cannot be certain that this is the case basis just the given information. Eliminate.

(B) Low speeds of reaction do not cause low body temperature. Similar to the reasoning for (A), we cannot be sure that this relationship does not exist, either. Eliminate.

(C) Low body temperatures do not cause low speeds of reaction. Correct. Consistent with our pre-thinking.

(D) Low body temperatures cause low speeds of reaction. This has been definitively ruled out in our pre-thinking as well as the stimulus. Eliminate.

(E) Artificially raising body temperature causes increased speed of reaction. This is contradictory to the facts given in the stimulus, which clearly state that artificially increasing body temperature does not cause increased speed of reaction. Eliminate.

Hope this helps.

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