A Researcher Creates a Machine That Will Measure the Total

Multiple Choice

A researcher creates a machine that will measure the total electrical activity in a human brain over a short period of time. She claims that this measures the happiness of the brain's owner. A psychologist says that's not true because the amount of electrical activity isn't related to "the emotional state of well-being" usually called happiness. The psychologist is claiming that electrical activity as a measure of happiness is:

A) invalid.
B) biased.
C) not reliable.
D) not precise.