1. When geographers group locations on Earth together because they all have at least o characteristic in common, which theme of geography are they applying? A.location****B.region C.human-environment interaction D.movement

When geographers group locations on Earth together because they all have at least one characteristic in common, they are applying the theme of geography known as "region."

To arrive at this answer, we can break down the options and understand what each theme of geography represents:

A. Location: This refers to the specific position or coordinates of a place on Earth's surface. It does not involve grouping places together based on common characteristics.

B. Region: This refers to grouping places together that share similar characteristics, such as climate, culture, language, or physical features. When geographers group locations based on shared characteristics, they are applying the theme of region.

C. Human-environment interaction: This theme focuses on how humans interact with and modify their natural environment. It does not involve grouping places together based on common characteristics.

D. Movement: This theme relates to the transfer of people, goods, information, and ideas from one location to another. It does not involve grouping places together based on common characteristics.

Therefore, the correct answer is B. Region.

B is correct.