David drinks two cups of coffee before leaving for a four-hour drive to visit a friend. what effect will the coffee have on david's behavior

The coffee will increase alertness in David while driving.

Explanation:

A study by A.Nehlig shows that if 75 mg of coffee, i.e a cup of coffee, is taken every four hours then it helps in improving the mood of a person and also increases the alertness. However, if increased amount of coffee is consumed then it results in tense arousal like anxiety and nervousness. As David consumed two cups of coffee, which is more than the 75 mg uptake, so he is most likely to have an increased alertness while driving.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

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