Question

the power of music
1 many people think of music as a source of entertainment, while others feel its just a tune playing in the background.
2 however, active listening of anything from a mozart symphony to a beatles song has an enormous, positive effect on the brain.
3 engagement with music can improve memory and focus, especially in children, by stimulating the brain.
4 it also engages parts of the brain that control our emotions.
5 when you listen to music, the brain releases dopamine, prolactin, and serotonin, which are chemicals that boost your mood.
6 as a result, people tend to feel an increase in energy and a decrease in stress levels.
7 finally, tuning out and turning on your tunes can shift your brain waves from beta to more relaxed alpha and theta states.
source: \music and health: 11 ways playing and listening to music help both body and mind.\ huffington post. huffington post, 11 april 2011, https://www.huffpost.com/entry/music - and - health - 11 - ways - body - mind_n_1413241.
1this sentence introduces the key word \music.\
2 this sentence creates paragraph coherence through
3 this sentence creates paragraph coherence through a transitional word or phrase.
repetition of the key word.
4 this sentence creates paragraph coherence through a pronoun substituted for the key word.
5 this sentence creates paragraph coherence through
6 this sentence creates paragraph coherence through
7 this sentence creates paragraph coherence through

Explanation:

1. Introduces music as a topic.
2. "However" is a transitional word, creating coherence.
3. Repeats the idea of music's effect (repetition of key - related concept).
4. "It" substitutes for "music", creating coherence.
5. "When you listen to music" repeats the key word.
6. "As a result" is a transitional phrase.
7. "tuning out and turning on your tunes" refers to music, using a related expression.

Answer:

1. N/A
2. a transitional word or phrase.
3. repetition of the key - related concept.
4. a pronoun substituted for the key word.
5. repetition of the key word.
6. a transitional word or phrase.
7. repetition of the key - related concept.