9514 1404 393
Answer:
C. ≥
Step-by-step explanation:
The wording "at least" means the same as "greater than or equal to," both in English and in math. The latter is usually how we describe the symbol ≥.
So, when (something) is "at least" 18, the symbol to use to describe that is ...
(something) ≥ 18 . . . . . . matches choice C
