Ared sleeveless dress has been a fast seller at a clothing store. which of these might raise the price of the dress?

a change in fashion season, requiring the store to put the dress out of stock
a competitor's product going on sale midway through the season
a decrease in sales of the dress during the second half of the season
a reduction in the number of dresses available from the manufacture

the answer is .A reduction in the number of dresses available from the manufacture
According to the law of supply and demand, a product tend to undergone an increase in prices if the supply is decreased.
When the supply is decreased, the products become more rare and give the seller more power to increase the price if the customers want to acquire it

Texas’ gulf coastal plains are the western extension of the coastal plain extending from the atlantic ocean to beyond the rio grande. its characteristic rolling to hilly surface covered with a heavy growth of pine and hardwoods extends into east texas. in the increasingly arid west, however, its forests become secondary in nature, consisting largely of post oaks and, farther west, prairies and brushlands.