Deficiency disease + A
Niacin (B3) deficiency + D
Vitamin A deficiency + B
Vitamin B1 deficiency + C
Vitamin D deficiency + E
Vitamin C deficiency + F
Hope i helped
Psychologists use a systematic method in research in order to eliminate subjectivity and allow for consistency across studies. This is to ensure that data is tested and recorded in the most objective way possible as well as ensure that psychologists are defining and measuring psychological concepts and behaviors in the same way.
Cocaine is a stimulant drug
