Choice A is the correct answer. Translate the phrases to symbols.

1. "At least 5": $n \geq 5$ or $5 \leq n$
2. "Less than 12": $n < 12$
3. Combine: $5 \leq n < 12$

?�� Strategic Tip: Pay close attention to "strict" ($<, >$) vs "inclusive" ($\leq, \geq$) phrases.

Choice B is incorrect because it swaps the inclusive/strict conditions. Choice C is incorrect because it includes 12 ("less than or equal to"). Choice D is incorrect because it excludes 5 ("greater than").