Sets of multiple correlations that show how several variables relate to each other are called ________

According to Corballis (1989):

A) the evolution of hemisphere specialization may be associated with the ability to create new associations B) humans evolved left-hemisphere mechanisms for language C) humans evolved right-handedness in the use of tools D) language use began 2 to 3 millions years ago E) all of the above

What is an operational definition?

a. an objective method of defining precisely what the distribution of power between women and men should be b. a well-defined way of assuring that males and females are randomly selected from a population c. a description of exactly how a variable in a study will be measured d. the protocol used for operations on newborns with ambiguous genitals