Answer:
A)
Explanation:
In this first example, we see that the purple line points to the right of the number 5, signifying that our unit (a) is infinitely greater than five, which fills one of our qualifications. The formula (a ≥ 5) requires us that the unit (a) be both greater to and/or equal to the number 5 (the line under the symbol signifies [and/or equal to]. The filled in bubble on the first example we are given also fills this qualification as this represents the unit 5 as being "equal to" (a).
In contrast, example B has an empty bubble signifying that the unit 5 is not included. This would be incorrect considering our problem requires that (a) be both GREATER than as well as EQUAL TO the number 5.