Which common topic is being used when a popular tennis player endorses a specific tennis racket brand? a. definition b. division c. relationship d. testimony

It is well known that the professional tennis payers are getting endorsements to advertise a specific brand of tennis racket, even though they actually use their old and comfortable tennis racket. Often the old ones get a paint job with the logo of the endorsed ones. The tennis players however have to give testimonies of how well they like playing with a certain type of racket so that their fans can buy these.  

Question: Which common topic is being used when a popular tennis player endorses a specific tennis racket brand?

D. Testimony

i c

yas the answer is c

the answer should be a)directions.