Answer:
small; wage rate
Explanation:
The purely competitive market is a wage taker as there are many number of firms who wants to purchase the labor services in that market also there are many number of workers who have similar skills and wants to sell their labor services
So as per the given situation, the each and every kind of firm wants to employs a small fractions of total supply available so that no firm could influence the wage rtae
Therefore the last option is correct