Hello! So, we are talking about numbers being close to 0 on a number line. Let's look at the denominators and convert the fraction into decimal form:
1/2 = 0.5
-1/3 = -0.33
1/4 = 0.25
-1/5 = -0.2
Let's look at the numbers. The absolute value is the distance from 0, and the absolute value is the numbers that you see, only that absolute value is always positive. If you observe, 0.2 is smaller than the other numbers. Therefore, -1/5 is closest to 0 on the number line. The answer is D: -1/5.