The ability of a test to measure what it sets out to measure is ______

The diminishing responsiveness of sensory systems to prolonged stimulation is known as __________

Fill in the blanks with correct word

An alien from outer space was just captured

Scientists take turns examining the creature. At a press conference, one of the scientists reports that the alien can hear frequencies between 10,000 and 30,000 Hz. How does the alien's ability to detect sound compare to a human being's ability? a) The alien and humans detect the same frequencies. b) Humans can detect higher frequencies than the alien. c) The alien can detect higher frequencies, but its hearing is not as acute at lower frequencies. d) Humans can detect higher frequencies; however, the alien detects lower frequencies better than humans.