If there is no relationship between two variables, then which type of correlation exists?

Early maturation in boys

a. tends to be valued more among lower-income adolescents. b. is valued less in Western cultures than in other cultures. c. is perceived negatively by adult authority figures. d. leads to greater benefits for higher-income adolescents.

Familial intellectual disability is caused by either genetic disorders or birth injuries

Indicate whether the statement is true or false