Par-tee golf sells only golf-related goods, but it offers a huge selection of clubs, golf bags, and accessories. it has become the dominant seller of golf equipment in many cities. par-tee is a
a. discount store.
b. category killer.
c. supercenter.
d. natural monopoly.

B. 

par-tee is a category killer. a category killer is a type of business store which is dominant in its product category. it offers an extensive collection of merchandise at such low prices that smaller stores cannot compete. category killers can compete successfully with other businesses by being bigger, cheaper and even being more popular. a good example of category killer would be walmart. which is a big-scale retail store. 

No that answer is wrong. you have written the function of mitochondria in chloroplast and function of chloroplast in mitochondria.