The problem asks which point on the number line represents the opposite of $-1$.

1. Problem Description

The problem asks which point on the number line represents the opposite of $-1$.

2. Solution Steps

The opposite of a number is the number with the opposite sign. The opposite of $-1$ is $-(-1)$, which is equal to $1$.

$-(-1) = 1$

Now we need to find which point on the number line corresponds to the number $1$.

Looking at the number line, we see that point D is at $1$.

3. Final Answer

D