The correct placement on the number line is: -50, -25, 75.
Starting from the left, -50 is the smallest value among the given numbers, followed by -25 in the middle, and 75 to the right as the largest. Placing them in this order ensures that the negative values are to the left of the positive one, and within the negative values, the smaller magnitude (-50) comes first. This order reflects the conventional way of representing numbers on a number line, contributing to a clear and accurate depiction of their positions in relation to each other.
Ultimately, the correct placement of -50, -25, and 75 on the number line serves as a visual aid for better comprehension of their numerical order and allows for effective comparison of their magnitudes.