I think the answer is c or d but I’m not sure tho
Answer:

Step-by-step explanation:

The part of speech is a verb.
A good function for this situation would be
c = 4(3m)
C is the cost of it all, m is the number of meters. The 3 is how many dollars it costs for each individual meter, and the 4 is how the length would need to be applied to all four sides of the fence. Hope this helped!