Rhyme and rhythm are two techniques that are being used. (Edit) also repetition.
Answer:
The more you read the better. If you don't understand some of the words look them up. Good readers usually have a huge range of vocabulary. Skim or scan the text first as well.
Explanation:
John's eyes were bad, and he peered to see the fog.
The answer is the second one from the top (she sighs softly).
