A Group of Adults Was Given a New High Protein

Multiple Choice

A group of adults was given a new high protein breakfast bar then asked to record their level of alertness just before lunchtime. In this example,_{--------------------} is the treatment variable and_{--------------------} is the outcome variable.

A) The group of adults; alertness level
B) Alertness level; the breakfast bar
C) The breakfast bar; lunchtime
D) The breakfast bar; alertness level