There's a hook sentence?:
I knew that in a few weeks I should start school. At this moment I realized that one of my goals had been met. With a little nervousness and few words coming out of my mouth, not knowing what to expect next. I remembered when I entered first grade of high school.

This one is strange. A hook sentence is usually the first line. If you need to write a hook, I can do that too

Explanation:

For the hook I suggest saying something like..

I stopped cold where I stood, I only  have a couple weeks left!

That would help draw attention to the writing

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!