When an Experimenter Began to Make Observations of a Psychic's

Multiple Choice

When an experimenter began to make observations of a psychic's behavior, the psychic's ESP disappeared. A parapsychologist claimed that the experimenter was generating negative energy that interfered with the ESP. Since scientific study requires that a researcher make observations, this creates a problem in that the parapsychologist is:

A) making an argument from possibility.
B) relying upon authority and low-quality evidence.
C) making the ESP hypothesis untestable.
D) making the ESP hypothesis implausible.