Finally, the phrase "scratch your skin off" is figurative. What does this phrase help the reader understand about the itch caused by a bedbug's bite?

The phrase helps the reader understand the extremity of the bug bite. By saying that your skin could essentially peel off, shows that with the bite you will have to scratch a lot. The force of scratching could feel like your skin is peeling off. Thus, the bug bite would be very bad and itchy.

Hope this helped :)

the correct answer is b. so you can tailor your resumé to the position.

it is important before sending your resumé for you could add some extra information relating to former jobs that might you get a higher possibility to be hired.

may be the company is looking for an experienced person, and showing you have worked in the area they are looking a person for may give you more positive points!