To find the sum of \( p \) and \( q \) where \( p = -59 \) and \( q = -29 \), we need to determine \( p + q \). This can be expressed as:
\[ -59 + (-29) = -59 - 29 \]
When you add two negative numbers, you move even further into the negative direction. Thus, you can visualize this on the number line by starting at \(-59\) and moving \(29\) spaces to the left.
Given the options, the correct choice that describes this process is:
D. Find −59 on the number line and count 29 spaces to the left.