Which is the underlined one?
D) to change so as to better suit your surroundings
Definition
make (something) suitable for a new use or purpose; modify.
-become adjusted to new conditions
A. Interrogative, question mark. "Have you ever been to North Carolina?" is a question, hence the question mark. If one is being interrogated, he or she is being questioned.
Answer:
Difficult part is to determine which variable is affecting the other and up to what extent.
Explanation:
The most difficult part to calculate while determining correlation is to access which variable is impacting the other variable/variables.
Thus, a Factor analysis is carried out to determine the relation of each variable with the other variables.