Final answer:
Havana Hats had the highest sales in May.
Step-by-step explanation:
The main information conveyed by the given data is that Havana Hats had the highest sales in May. In May, Havana Hats sold 230 hats for a total of $5,750. On the other hand, in February, they sold 150 hats for a total of $3,750, which is the lowest sales during the eight-month period. Therefore, the correct answer is C) Havana Hats had the highest sales in May.