Question

order the topics from broadest to narrowest. broader the activity of the human brain delta brain waves during deep sleep brain activity during sleep narrower

Explanation:

The activity of the human brain is the broadest as it encompasses all brain - related activities. Brain activity during sleep is a subset of the human brain's activity. Delta brain waves during deep sleep are a specific type of brain activity during sleep.

Answer:

the activity of the human brain, brain activity during sleep, delta brain waves during deep sleep