Why doesn't the narrator use the term "tribe" in this video? It's a word only used to describe indigenous ethnic groups in the Americas.

It is a word that was often used by Europeans to demean and dismiss cultures and societies they viewed as "primitive" (ie. not white and/or not Christian).

It is not a word recognized by major dictionaries like Merriam-Webster and Oxford.

It's a word used exclusively in American standard English.

video: https://youtu. be/48Y5pBtRHqk

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.