It is a good idea to accept a promotion interview, even if you’re not interested in the promotion because

If your choices are the following:
a. Turning down a promotion you don’t want is easier after an interview
b. It could be good practice for the time you do want a promotion
c. Being able to use up your supervisor’s time will make you seem important
d. Having a promotion interview will give you an automatic wage increase

Then the answer would be B.

Idon’t understand your question, can you clear it up?

Answer the car approaching from the right has the right of way;