Read the passage carefully and choose the correct answer.

Preparation is a key to a successful interview. Does the idea of going to a job interview make you feel a little nervous? Many people find that it is the hardest part of the employing process. But it is not really true. The more you prepare and practice, the more comfortable you will feel. You should find out as much as possible about the company before you go to the interview. Understand the products that they produce and the services that they provide. It is also good to know who the customers are and who the major competitors are. Practice makes perfect. It will also make you feel more confident and relaxed. So, practice your answers to common questions. Make a list of questions to ask, too. Almost all interviewers will ask if you have questions. This is a great opportunity for you to show your keenness, enthusiasm, and knowledge. Make a great impression. The interview is your chance to show that you are the best person for the job. Your application or resume has already exhibited that you are qualified. Now it is up to you to show how your skills and experience match this position and this company. The employer will be looking and listening to determine if you are a good fit. He/she will be looking for a number of different qualities, in addition to the skills that you possess. To make the best impression, dress appropriately; express your strengths; arrive early, by about 10-15 minutes; be enthusiastic; shake hands firmly; be an active listener; sit up straight and maintain eye contact; and ask questions After the interview, follow up with a thank-you note. This is a chance for you to restate your interest and how you can benefit the company. Your best bet is to try to time it so that the note gets there before the hiring: decision is made. You should also follow up with a phone call if you do not hear back from the employer within the specified time

What does the writer advise you to practice?