Answer:
Create operational definitions of the variables she wants to study
Step-by-step explanation:
Natasha's professor wants her to create operational definitions of the variable terms in the research that she wants to study. This is evident by the question he asked, ' what do you mean exactly by similarity and attraction'. In research, operational definition means assigning a meaning to the variable of study or interest. She has to define these terms in a way that they are observable and measurable.