Researchers are conducting a study to determine the effects of vitamin D supplementation on bone health in adults.The study involves providing pills that contain vitamin D to one group of human adults,and pills that do not contain the vitamin or other active ingredients to another group of adults.The pills that do not contain vitamin D are
A)placebos.
B)antidotes.
C)distractors.
D)interventions.

Question

Quizplus · Accepted Answer

The pills that do not contain vitamin D are placebos, which are inactive substances used as a control in scientific studies to ensure that any observed effects are due to the treatment being tested and not to other factors.

Researchers Are Conducting a Study to Determine the Effects of Vitamin