In a competitive market, the actions of any single buyer or seller will select one:
a. discourage entry by competitors.
b. none of the above is correct.
c. have a negligible impact on the market price.
d. influence the profits of other firms in the market.

C) Have a negligible impact on the market price

Explanation:

The primary effect of a single buyer is that the individual purchaser in a given industry has control of the market. Since such huge numbers of merchants are contending to offer to that purchaser, therefore buyers should decide to bring down their costs to stay focused.

Single buyers are additionally necessary for work to advertise. Since laborers sell their work, a solitary manager enlisting for a whole industry can adequately drive wages down. Laborers who won't acknowledge these lower wages have no choice to get contracted; just specialists who energetically recognize low wages wind up being utilized in that industry.

all of them make sense but, i would have to say ask someone who has been there/or lives there, and/or read recent newspapers from that city.

hope this !