a grocery store
Answer: Option 4.
Step-by-step explanation:
Perfectly competitive market is a form of market in which the suppliers of the market are not differentiated from each other. In the sense that the firms of this form of market produce goods which are same.
The prices of the goods, the physical features of the goods like the shape, color, size of the goods are same with each other. They are not different. So these are homogeneous to each other. The clients of this market are not attracted to any particular supplier because all are homogeneous.