yes
Are you asking why you are best qualified for a job? Is it a specific job you consider yourself qualified to do? Or are you wondering if you are qualified for any job at all? The best way to ask the question is to say "Why am I best qualified for THIS job". (your English skills aside - you never want to ask the person with the job if he feels you are qualified, so if this question stems from your concern over how to effectively interview for a job - don't ask them why you are best qualified - TELL them.
Job interviews do not give you qualifications. Qualifications are obtained by assessment and examination. This may take the form, in part, of an interview but it would not be a job interview.
A thank-you letter
in everything i do,i always say thank you.
In life, whenever someone gives you a gift, or does something for you, write a thank-you note. This is especially true for a job interview, and it makes you look professional.
an interview is important because the employer needs to know if the employee is good/qualified to do that particular job
Becuase I am well qualified
it is where the prospective employer sits down with you face to face and asks youe questions to see if you are qualified for the job and to decide if they want to hire you
Besides the interview, and a cover letter, a good resume is the MOST IMPORTANT factor in landing you the job you want. You see, with a good resume, you are in essence showcasing your skills and unique qualifications and explaining (by example) how qualified you are in comparison to other applicants. With your resume, you show that you're qualified, reliable, knowledgeable about the job and can handle it, and much more. During the interview, you showcase your skills even more. So, the resume and interview are extremely important in securing the position.
After an interviewfollowing a job interview
if you're qualified and interview well, not hard at all
A thank you