Elena finds it very difficult to remember a long string of numbers, so she tries to memorize three numbers at a time. Later, she is able to repeat the numbers correctly because she grouped the numbers into more manageable groups of three. This is an example of

The answer is chunking.

Explanation:

Chinking is a learning technique that consists in grouping information into separate sections or "chunks". This allows the person to remember more easily, as the brain processes the information as single units.

For example, while learning a language, a person might choose to learn complete phrases at a time, instead of knowing the meaning of each individual word.

the answer is a. monarch

carefully examine the map above. based on your knowledge of colonialism in africa, the area attributed to belgium on this map is most likely the democratic republic of the congo.