Someone who is fidgeting is likely lying

It is a basic statistical principle of scientific research that ____, meaning that when two variables are correlated, it is not possible to tell whether one variable ___ the other

a. the standard curve is always correlational; is expressed by b. quasi-experiments have functionality; is related to c. correlation does not imply causation; caused d. hypotheses always support the theory; acted as a catalyst for

The decision of when to retire is a major decision facing most people in late adulthood

Indicate whether the statement is true or false.