Alpha, beta and gamma change illustrate that $\_\_\_\_\_\_.$

Group of answer choices

there were too many change models

researchers included too many variables in their change models

the research objective should, but did not always, dictate the research methodology

there was not enough agreement between researchers on how to measure the variables

any discrete change

multiple behavioral measurements within a given time period

a discrete change that occurs within a designated time period

multiple behavioral measurements over time