What information is contained in the introduction of a cover letter?

A) Your long-term goals

B) Your personal qualifications

C) Your relevant job experience

D) Your purpose for writing

The information which is contained in the introduction of a cover letter is D. your purpose for writing.

Here, you should state your reasons why you are writing this letter to that particular person. You should say that you are interested in that job and that you'd really appreciate it if that employer would take a look at your resume to see if you fit the position.