In single-subject research (specifically in phase-change designs), a phase consists of a. a series of observations conducted over time. b. a series of observations of the same individual.  c. a series...

In single-subject research (specifically in phase-change designs), a phase consists of

a. a series of observations conducted over time.

b. a series of observations of the same individual.

 c. a series of observations under the same conditions.

d. the other three choices are all components of a phase.