In which passage is it clearest that the author is using diction to achieve some kind of effect?
a. the teacher stood at the door smiling brightly and welcoming each student to her classroom on the first day of school.
b. the mother gingerly tucked the blanket around her sleepy child and crept like a mouse out the door.
c. the shark's fin moved around the raft, which held four shipwrecked survivors.
d. the dog barked as the mail carrier walked up the stairs and knocked on the front door.

he will find out what went wrong or happened and how.

invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.