Answer:
B. Produce the same quantity
Explanation:
Perfect Competition is market form with many buyers & sellers, where  identical goods are sold at uniform prices .
In this market : Marginal Revenue (MR)  = Average Revenue (AR) = Price  (P) , as a horizontal curve parallel to X axis.
Producer is at  profit maximising equilibrium where : MR = MC (Marginal Cost). Producer tends to stay at this production point.
So, by above 2 equations : Â MC = [ MR = P ] is the equilibrium for Farley Frozen Yogurt .
As given : Price = $7 & MC = $7 satisfies above equilibrium equality condition. Hence , this is Farley Frozen Yogurt's Producer Equilibrium & it would tend to produce the same quantity.