Answer:
D. have outputs that are too small to influence market price and thus take it as given.
Step-by-step explanation:
In perfect competition there are large number of firms and individual contribution is less in industry output , it means that firms have output which are too small to influence the market price ans thus it is as given .
Hence ,
The firms which exhibit price - taking behavior have the output which is too small to be influenced by the market price , and therefore remains as it is .