Some studies has shown that peppermint odor increase people's mental sharpness especially when they solve math problems which best describes how this could be a valid scientific claim

If it is tested in a controlled setting with repeated results.

Explanation:

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Every scientific foundation is preceded by a series of repetitive tests which allow the scientists to state both reliable and trustful conclusions. In such a way, by repeating the aforesaid test, the conclusion is strengthened, nevertheless, those tests must be carried out in a controlled manner in order to assure that the proposed conclusion is suitable under the specified conditions for scientific claims.

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atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.