Hello!
The most accurate answer is
B) les meilleurs
This is because
A) les moins chers (The Cheapest)
C) les plus salés (The Saltiest)
D) les moins bons (The Worst)
are all negative.
The statement explained "The Bistro Chez Renée is excellent." and A,C, and D do not support this statement at all.
Glad to help! :)
